1use crate::{
2 blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
3 code_context_menus::{CodeActionsMenu, MAX_COMPLETIONS_ASIDE_WIDTH},
4 display_map::{
5 Block, BlockContext, BlockStyle, DisplaySnapshot, HighlightedChunk, ToDisplayPoint,
6 },
7 editor_settings::{
8 CurrentLineHighlight, DoubleClickInMultibuffer, MultiCursorModifier, ScrollBeyondLastLine,
9 ShowScrollbar,
10 },
11 git::blame::{CommitDetails, GitBlame},
12 hover_popover::{
13 self, hover_at, HOVER_POPOVER_GAP, MIN_POPOVER_CHARACTER_WIDTH, MIN_POPOVER_LINE_HEIGHT,
14 },
15 hunk_diff::{diff_hunk_to_display, DisplayDiffHunk},
16 hunk_status,
17 items::BufferSearchHighlights,
18 mouse_context_menu::{self, MenuPosition, MouseContextMenu},
19 scroll::{axis_pair, scroll_amount::ScrollAmount, AxisPair},
20 BlockId, ChunkReplacement, CursorShape, CustomBlockId, DisplayPoint, DisplayRow,
21 DocumentHighlightRead, DocumentHighlightWrite, Editor, EditorMode, EditorSettings,
22 EditorSnapshot, EditorStyle, ExpandExcerpts, FocusedBlock, GutterDimensions, HalfPageDown,
23 HalfPageUp, HandleInput, HoveredCursor, HoveredHunk, InlineCompletion, JumpData, LineDown,
24 LineUp, OpenExcerpts, PageDown, PageUp, Point, RowExt, RowRangeExt, SelectPhase, Selection,
25 SoftWrap, ToPoint, ToggleFold, CURSORS_VISIBLE_FOR, FILE_HEADER_HEIGHT,
26 GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED, MAX_LINE_LEN, MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
27};
28use client::ParticipantIndex;
29use collections::{BTreeMap, HashMap, HashSet};
30use file_icons::FileIcons;
31use git::{blame::BlameEntry, diff::DiffHunkStatus, Oid};
32use gpui::{
33 anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
34 transparent_black, Action, AnyElement, AvailableSpace, Axis, Bounds, ClickEvent, ClipboardItem,
35 ContentMask, Corner, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler,
36 Entity, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
37 ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
38 ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
39 StatefulInteractiveElement, Style, Styled, Subscription, TextRun, TextStyleRefinement, View,
40 ViewContext, WeakView, WindowContext,
41};
42use itertools::Itertools;
43use language::{
44 language_settings::{
45 IndentGuideBackgroundColoring, IndentGuideColoring, IndentGuideSettings,
46 ShowWhitespaceSetting,
47 },
48 ChunkRendererContext,
49};
50use lsp::DiagnosticSeverity;
51use multi_buffer::{
52 Anchor, AnchorRangeExt, ExcerptId, ExcerptInfo, ExpandExcerptDirection, MultiBufferPoint,
53 MultiBufferRow, MultiBufferSnapshot, ToOffset,
54};
55use project::{
56 project_settings::{GitGutterSetting, ProjectSettings},
57 ProjectPath,
58};
59use settings::Settings;
60use smallvec::{smallvec, SmallVec};
61use std::{
62 any::TypeId,
63 borrow::Cow,
64 cmp::{self, Ordering},
65 fmt::{self, Write},
66 iter, mem,
67 ops::{Deref, Range},
68 rc::Rc,
69 sync::Arc,
70};
71use sum_tree::Bias;
72use theme::{ActiveTheme, Appearance, PlayerColor};
73use ui::{h_flex, ButtonLike, ButtonStyle, ContextMenu, Tooltip};
74use ui::{prelude::*, POPOVER_Y_PADDING};
75use unicode_segmentation::UnicodeSegmentation;
76use util::RangeExt;
77use util::ResultExt;
78use workspace::{item::Item, Workspace};
79
80struct SelectionLayout {
81 head: DisplayPoint,
82 cursor_shape: CursorShape,
83 is_newest: bool,
84 is_local: bool,
85 range: Range<DisplayPoint>,
86 active_rows: Range<DisplayRow>,
87 user_name: Option<SharedString>,
88}
89
90impl SelectionLayout {
91 fn new<T: ToPoint + ToDisplayPoint + Clone>(
92 selection: Selection<T>,
93 line_mode: bool,
94 cursor_shape: CursorShape,
95 map: &DisplaySnapshot,
96 is_newest: bool,
97 is_local: bool,
98 user_name: Option<SharedString>,
99 ) -> Self {
100 let point_selection = selection.map(|p| p.to_point(&map.buffer_snapshot));
101 let display_selection = point_selection.map(|p| p.to_display_point(map));
102 let mut range = display_selection.range();
103 let mut head = display_selection.head();
104 let mut active_rows = map.prev_line_boundary(point_selection.start).1.row()
105 ..map.next_line_boundary(point_selection.end).1.row();
106
107 // vim visual line mode
108 if line_mode {
109 let point_range = map.expand_to_line(point_selection.range());
110 range = point_range.start.to_display_point(map)..point_range.end.to_display_point(map);
111 }
112
113 // any vim visual mode (including line mode)
114 if (cursor_shape == CursorShape::Block || cursor_shape == CursorShape::Hollow)
115 && !range.is_empty()
116 && !selection.reversed
117 {
118 if head.column() > 0 {
119 head = map.clip_point(DisplayPoint::new(head.row(), head.column() - 1), Bias::Left)
120 } else if head.row().0 > 0 && head != map.max_point() {
121 head = map.clip_point(
122 DisplayPoint::new(
123 head.row().previous_row(),
124 map.line_len(head.row().previous_row()),
125 ),
126 Bias::Left,
127 );
128 // updating range.end is a no-op unless you're cursor is
129 // on the newline containing a multi-buffer divider
130 // in which case the clip_point may have moved the head up
131 // an additional row.
132 range.end = DisplayPoint::new(head.row().next_row(), 0);
133 active_rows.end = head.row();
134 }
135 }
136
137 Self {
138 head,
139 cursor_shape,
140 is_newest,
141 is_local,
142 range,
143 active_rows,
144 user_name,
145 }
146 }
147}
148
149pub struct EditorElement {
150 editor: View<Editor>,
151 style: EditorStyle,
152}
153
154type DisplayRowDelta = u32;
155
156impl EditorElement {
157 pub(crate) const SCROLLBAR_WIDTH: Pixels = px(15.);
158
159 pub fn new(editor: &View<Editor>, style: EditorStyle) -> Self {
160 Self {
161 editor: editor.clone(),
162 style,
163 }
164 }
165
166 fn register_actions(&self, cx: &mut WindowContext) {
167 let view = &self.editor;
168 view.update(cx, |editor, cx| {
169 for action in editor.editor_actions.borrow().values() {
170 (action)(cx)
171 }
172 });
173
174 crate::rust_analyzer_ext::apply_related_actions(view, cx);
175 crate::clangd_ext::apply_related_actions(view, cx);
176 register_action(view, cx, Editor::open_context_menu);
177 register_action(view, cx, Editor::move_left);
178 register_action(view, cx, Editor::move_right);
179 register_action(view, cx, Editor::move_down);
180 register_action(view, cx, Editor::move_down_by_lines);
181 register_action(view, cx, Editor::select_down_by_lines);
182 register_action(view, cx, Editor::move_up);
183 register_action(view, cx, Editor::move_up_by_lines);
184 register_action(view, cx, Editor::select_up_by_lines);
185 register_action(view, cx, Editor::select_page_down);
186 register_action(view, cx, Editor::select_page_up);
187 register_action(view, cx, Editor::cancel);
188 register_action(view, cx, Editor::newline);
189 register_action(view, cx, Editor::newline_above);
190 register_action(view, cx, Editor::newline_below);
191 register_action(view, cx, Editor::backspace);
192 register_action(view, cx, Editor::delete);
193 register_action(view, cx, Editor::tab);
194 register_action(view, cx, Editor::tab_prev);
195 register_action(view, cx, Editor::indent);
196 register_action(view, cx, Editor::outdent);
197 register_action(view, cx, Editor::autoindent);
198 register_action(view, cx, Editor::delete_line);
199 register_action(view, cx, Editor::join_lines);
200 register_action(view, cx, Editor::sort_lines_case_sensitive);
201 register_action(view, cx, Editor::sort_lines_case_insensitive);
202 register_action(view, cx, Editor::reverse_lines);
203 register_action(view, cx, Editor::shuffle_lines);
204 register_action(view, cx, Editor::convert_to_upper_case);
205 register_action(view, cx, Editor::convert_to_lower_case);
206 register_action(view, cx, Editor::convert_to_title_case);
207 register_action(view, cx, Editor::convert_to_snake_case);
208 register_action(view, cx, Editor::convert_to_kebab_case);
209 register_action(view, cx, Editor::convert_to_upper_camel_case);
210 register_action(view, cx, Editor::convert_to_lower_camel_case);
211 register_action(view, cx, Editor::convert_to_opposite_case);
212 register_action(view, cx, Editor::delete_to_previous_word_start);
213 register_action(view, cx, Editor::delete_to_previous_subword_start);
214 register_action(view, cx, Editor::delete_to_next_word_end);
215 register_action(view, cx, Editor::delete_to_next_subword_end);
216 register_action(view, cx, Editor::delete_to_beginning_of_line);
217 register_action(view, cx, Editor::delete_to_end_of_line);
218 register_action(view, cx, Editor::cut_to_end_of_line);
219 register_action(view, cx, Editor::duplicate_line_up);
220 register_action(view, cx, Editor::duplicate_line_down);
221 register_action(view, cx, Editor::duplicate_selection);
222 register_action(view, cx, Editor::move_line_up);
223 register_action(view, cx, Editor::move_line_down);
224 register_action(view, cx, Editor::transpose);
225 register_action(view, cx, Editor::rewrap);
226 register_action(view, cx, Editor::cut);
227 register_action(view, cx, Editor::kill_ring_cut);
228 register_action(view, cx, Editor::kill_ring_yank);
229 register_action(view, cx, Editor::copy);
230 register_action(view, cx, Editor::paste);
231 register_action(view, cx, Editor::undo);
232 register_action(view, cx, Editor::redo);
233 register_action(view, cx, Editor::move_page_up);
234 register_action(view, cx, Editor::move_page_down);
235 register_action(view, cx, Editor::next_screen);
236 register_action(view, cx, Editor::scroll_cursor_top);
237 register_action(view, cx, Editor::scroll_cursor_center);
238 register_action(view, cx, Editor::scroll_cursor_bottom);
239 register_action(view, cx, Editor::scroll_cursor_center_top_bottom);
240 register_action(view, cx, |editor, _: &LineDown, cx| {
241 editor.scroll_screen(&ScrollAmount::Line(1.), cx)
242 });
243 register_action(view, cx, |editor, _: &LineUp, cx| {
244 editor.scroll_screen(&ScrollAmount::Line(-1.), cx)
245 });
246 register_action(view, cx, |editor, _: &HalfPageDown, cx| {
247 editor.scroll_screen(&ScrollAmount::Page(0.5), cx)
248 });
249 register_action(view, cx, |editor, HandleInput(text): &HandleInput, cx| {
250 if text.is_empty() {
251 return;
252 }
253 editor.handle_input(text, cx);
254 });
255 register_action(view, cx, |editor, _: &HalfPageUp, cx| {
256 editor.scroll_screen(&ScrollAmount::Page(-0.5), cx)
257 });
258 register_action(view, cx, |editor, _: &PageDown, cx| {
259 editor.scroll_screen(&ScrollAmount::Page(1.), cx)
260 });
261 register_action(view, cx, |editor, _: &PageUp, cx| {
262 editor.scroll_screen(&ScrollAmount::Page(-1.), cx)
263 });
264 register_action(view, cx, Editor::move_to_previous_word_start);
265 register_action(view, cx, Editor::move_to_previous_subword_start);
266 register_action(view, cx, Editor::move_to_next_word_end);
267 register_action(view, cx, Editor::move_to_next_subword_end);
268 register_action(view, cx, Editor::move_to_beginning_of_line);
269 register_action(view, cx, Editor::move_to_end_of_line);
270 register_action(view, cx, Editor::move_to_start_of_paragraph);
271 register_action(view, cx, Editor::move_to_end_of_paragraph);
272 register_action(view, cx, Editor::move_to_beginning);
273 register_action(view, cx, Editor::move_to_end);
274 register_action(view, cx, Editor::select_up);
275 register_action(view, cx, Editor::select_down);
276 register_action(view, cx, Editor::select_left);
277 register_action(view, cx, Editor::select_right);
278 register_action(view, cx, Editor::select_to_previous_word_start);
279 register_action(view, cx, Editor::select_to_previous_subword_start);
280 register_action(view, cx, Editor::select_to_next_word_end);
281 register_action(view, cx, Editor::select_to_next_subword_end);
282 register_action(view, cx, Editor::select_to_beginning_of_line);
283 register_action(view, cx, Editor::select_to_end_of_line);
284 register_action(view, cx, Editor::select_to_start_of_paragraph);
285 register_action(view, cx, Editor::select_to_end_of_paragraph);
286 register_action(view, cx, Editor::select_to_beginning);
287 register_action(view, cx, Editor::select_to_end);
288 register_action(view, cx, Editor::select_all);
289 register_action(view, cx, |editor, action, cx| {
290 editor.select_all_matches(action, cx).log_err();
291 });
292 register_action(view, cx, Editor::select_line);
293 register_action(view, cx, Editor::split_selection_into_lines);
294 register_action(view, cx, Editor::add_selection_above);
295 register_action(view, cx, Editor::add_selection_below);
296 register_action(view, cx, |editor, action, cx| {
297 editor.select_next(action, cx).log_err();
298 });
299 register_action(view, cx, |editor, action, cx| {
300 editor.select_previous(action, cx).log_err();
301 });
302 register_action(view, cx, Editor::toggle_comments);
303 register_action(view, cx, Editor::select_larger_syntax_node);
304 register_action(view, cx, Editor::select_smaller_syntax_node);
305 register_action(view, cx, Editor::select_enclosing_symbol);
306 register_action(view, cx, Editor::move_to_enclosing_bracket);
307 register_action(view, cx, Editor::undo_selection);
308 register_action(view, cx, Editor::redo_selection);
309 if !view.read(cx).is_singleton(cx) {
310 register_action(view, cx, Editor::expand_excerpts);
311 register_action(view, cx, Editor::expand_excerpts_up);
312 register_action(view, cx, Editor::expand_excerpts_down);
313 }
314 register_action(view, cx, Editor::go_to_diagnostic);
315 register_action(view, cx, Editor::go_to_prev_diagnostic);
316 register_action(view, cx, Editor::go_to_next_hunk);
317 register_action(view, cx, Editor::go_to_prev_hunk);
318 register_action(view, cx, |editor, a, cx| {
319 editor.go_to_definition(a, cx).detach_and_log_err(cx);
320 });
321 register_action(view, cx, |editor, a, cx| {
322 editor.go_to_definition_split(a, cx).detach_and_log_err(cx);
323 });
324 register_action(view, cx, |editor, a, cx| {
325 editor.go_to_declaration(a, cx).detach_and_log_err(cx);
326 });
327 register_action(view, cx, |editor, a, cx| {
328 editor.go_to_declaration_split(a, cx).detach_and_log_err(cx);
329 });
330 register_action(view, cx, |editor, a, cx| {
331 editor.go_to_implementation(a, cx).detach_and_log_err(cx);
332 });
333 register_action(view, cx, |editor, a, cx| {
334 editor
335 .go_to_implementation_split(a, cx)
336 .detach_and_log_err(cx);
337 });
338 register_action(view, cx, |editor, a, cx| {
339 editor.go_to_type_definition(a, cx).detach_and_log_err(cx);
340 });
341 register_action(view, cx, |editor, a, cx| {
342 editor
343 .go_to_type_definition_split(a, cx)
344 .detach_and_log_err(cx);
345 });
346 register_action(view, cx, Editor::open_url);
347 register_action(view, cx, Editor::open_file);
348 register_action(view, cx, Editor::fold);
349 register_action(view, cx, Editor::fold_at_level);
350 register_action(view, cx, Editor::fold_all);
351 register_action(view, cx, Editor::fold_function_bodies);
352 register_action(view, cx, Editor::fold_at);
353 register_action(view, cx, Editor::fold_recursive);
354 register_action(view, cx, Editor::toggle_fold);
355 register_action(view, cx, Editor::toggle_fold_recursive);
356 register_action(view, cx, Editor::unfold_lines);
357 register_action(view, cx, Editor::unfold_recursive);
358 register_action(view, cx, Editor::unfold_all);
359 register_action(view, cx, Editor::unfold_at);
360 register_action(view, cx, Editor::fold_selected_ranges);
361 register_action(view, cx, Editor::show_completions);
362 register_action(view, cx, Editor::toggle_code_actions);
363 register_action(view, cx, Editor::open_excerpts);
364 register_action(view, cx, Editor::open_excerpts_in_split);
365 register_action(view, cx, Editor::open_proposed_changes_editor);
366 register_action(view, cx, Editor::toggle_soft_wrap);
367 register_action(view, cx, Editor::toggle_tab_bar);
368 register_action(view, cx, Editor::toggle_line_numbers);
369 register_action(view, cx, Editor::toggle_relative_line_numbers);
370 register_action(view, cx, Editor::toggle_indent_guides);
371 register_action(view, cx, Editor::toggle_inlay_hints);
372 register_action(view, cx, Editor::toggle_inline_completions);
373 register_action(view, cx, hover_popover::hover);
374 register_action(view, cx, Editor::reveal_in_finder);
375 register_action(view, cx, Editor::copy_path);
376 register_action(view, cx, Editor::copy_relative_path);
377 register_action(view, cx, Editor::copy_highlight_json);
378 register_action(view, cx, Editor::copy_permalink_to_line);
379 register_action(view, cx, Editor::open_permalink_to_line);
380 register_action(view, cx, Editor::copy_file_location);
381 register_action(view, cx, Editor::toggle_git_blame);
382 register_action(view, cx, Editor::toggle_git_blame_inline);
383 register_action(view, cx, Editor::toggle_hunk_diff);
384 register_action(view, cx, Editor::expand_all_hunk_diffs);
385 register_action(view, cx, |editor, action, cx| {
386 if let Some(task) = editor.format(action, cx) {
387 task.detach_and_log_err(cx);
388 } else {
389 cx.propagate();
390 }
391 });
392 register_action(view, cx, |editor, action, cx| {
393 if let Some(task) = editor.format_selections(action, cx) {
394 task.detach_and_log_err(cx);
395 } else {
396 cx.propagate();
397 }
398 });
399 register_action(view, cx, Editor::restart_language_server);
400 register_action(view, cx, Editor::cancel_language_server_work);
401 register_action(view, cx, Editor::show_character_palette);
402 register_action(view, cx, |editor, action, cx| {
403 if let Some(task) = editor.confirm_completion(action, cx) {
404 task.detach_and_log_err(cx);
405 } else {
406 cx.propagate();
407 }
408 });
409 register_action(view, cx, |editor, action, cx| {
410 if let Some(task) = editor.compose_completion(action, cx) {
411 task.detach_and_log_err(cx);
412 } else {
413 cx.propagate();
414 }
415 });
416 register_action(view, cx, |editor, action, cx| {
417 if let Some(task) = editor.confirm_code_action(action, cx) {
418 task.detach_and_log_err(cx);
419 } else {
420 cx.propagate();
421 }
422 });
423 register_action(view, cx, |editor, action, cx| {
424 if let Some(task) = editor.rename(action, cx) {
425 task.detach_and_log_err(cx);
426 } else {
427 cx.propagate();
428 }
429 });
430 register_action(view, cx, |editor, action, cx| {
431 if let Some(task) = editor.confirm_rename(action, cx) {
432 task.detach_and_log_err(cx);
433 } else {
434 cx.propagate();
435 }
436 });
437 register_action(view, cx, |editor, action, cx| {
438 if let Some(task) = editor.find_all_references(action, cx) {
439 task.detach_and_log_err(cx);
440 } else {
441 cx.propagate();
442 }
443 });
444 register_action(view, cx, Editor::show_signature_help);
445 register_action(view, cx, Editor::next_inline_completion);
446 register_action(view, cx, Editor::previous_inline_completion);
447 register_action(view, cx, Editor::show_inline_completion);
448 register_action(view, cx, Editor::context_menu_first);
449 register_action(view, cx, Editor::context_menu_prev);
450 register_action(view, cx, Editor::context_menu_next);
451 register_action(view, cx, Editor::context_menu_last);
452 register_action(view, cx, Editor::display_cursor_names);
453 register_action(view, cx, Editor::unique_lines_case_insensitive);
454 register_action(view, cx, Editor::unique_lines_case_sensitive);
455 register_action(view, cx, Editor::accept_partial_inline_completion);
456 register_action(view, cx, Editor::accept_inline_completion);
457 register_action(view, cx, Editor::revert_file);
458 register_action(view, cx, Editor::revert_selected_hunks);
459 register_action(view, cx, Editor::apply_all_diff_hunks);
460 register_action(view, cx, Editor::apply_selected_diff_hunks);
461 register_action(view, cx, Editor::open_active_item_in_terminal);
462 register_action(view, cx, Editor::reload_file);
463 register_action(view, cx, Editor::spawn_nearest_task);
464 register_action(view, cx, Editor::insert_uuid_v4);
465 register_action(view, cx, Editor::insert_uuid_v7);
466 }
467
468 fn register_key_listeners(&self, cx: &mut WindowContext, layout: &EditorLayout) {
469 let position_map = layout.position_map.clone();
470 cx.on_key_event({
471 let editor = self.editor.clone();
472 let text_hitbox = layout.text_hitbox.clone();
473 move |event: &ModifiersChangedEvent, phase, cx| {
474 if phase != DispatchPhase::Bubble {
475 return;
476 }
477 editor.update(cx, |editor, cx| {
478 if editor.hover_state.focused(cx) {
479 return;
480 }
481 Self::modifiers_changed(editor, event, &position_map, &text_hitbox, cx)
482 })
483 }
484 });
485 }
486
487 fn modifiers_changed(
488 editor: &mut Editor,
489 event: &ModifiersChangedEvent,
490 position_map: &PositionMap,
491 text_hitbox: &Hitbox,
492 cx: &mut ViewContext<Editor>,
493 ) {
494 let mouse_position = cx.mouse_position();
495 if !text_hitbox.is_hovered(cx) {
496 return;
497 }
498
499 editor.update_hovered_link(
500 position_map.point_for_position(text_hitbox.bounds, mouse_position),
501 &position_map.snapshot,
502 event.modifiers,
503 cx,
504 )
505 }
506
507 fn mouse_left_down(
508 editor: &mut Editor,
509 event: &MouseDownEvent,
510 hovered_hunk: Option<HoveredHunk>,
511 position_map: &PositionMap,
512 text_hitbox: &Hitbox,
513 gutter_hitbox: &Hitbox,
514 cx: &mut ViewContext<Editor>,
515 ) {
516 if cx.default_prevented() {
517 return;
518 }
519
520 let mut click_count = event.click_count;
521 let mut modifiers = event.modifiers;
522
523 if let Some(hovered_hunk) = hovered_hunk {
524 editor.toggle_hovered_hunk(&hovered_hunk, cx);
525 cx.notify();
526 return;
527 } else if gutter_hitbox.is_hovered(cx) {
528 click_count = 3; // Simulate triple-click when clicking the gutter to select lines
529 } else if !text_hitbox.is_hovered(cx) {
530 return;
531 }
532
533 if click_count == 2 && !editor.buffer().read(cx).is_singleton() {
534 match EditorSettings::get_global(cx).double_click_in_multibuffer {
535 DoubleClickInMultibuffer::Select => {
536 // do nothing special on double click, all selection logic is below
537 }
538 DoubleClickInMultibuffer::Open => {
539 if modifiers.alt {
540 // if double click is made with alt, pretend it's a regular double click without opening and alt,
541 // and run the selection logic.
542 modifiers.alt = false;
543 } else {
544 // if double click is made without alt, open the corresponding excerp
545 editor.open_excerpts(&OpenExcerpts, cx);
546 return;
547 }
548 }
549 }
550 }
551
552 let point_for_position =
553 position_map.point_for_position(text_hitbox.bounds, event.position);
554 let position = point_for_position.previous_valid;
555 if modifiers.shift && modifiers.alt {
556 editor.select(
557 SelectPhase::BeginColumnar {
558 position,
559 reset: false,
560 goal_column: point_for_position.exact_unclipped.column(),
561 },
562 cx,
563 );
564 } else if modifiers.shift && !modifiers.control && !modifiers.alt && !modifiers.secondary()
565 {
566 editor.select(
567 SelectPhase::Extend {
568 position,
569 click_count,
570 },
571 cx,
572 );
573 } else {
574 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
575 let multi_cursor_modifier = match multi_cursor_setting {
576 MultiCursorModifier::Alt => modifiers.alt,
577 MultiCursorModifier::CmdOrCtrl => modifiers.secondary(),
578 };
579 editor.select(
580 SelectPhase::Begin {
581 position,
582 add: multi_cursor_modifier,
583 click_count,
584 },
585 cx,
586 );
587 }
588
589 cx.stop_propagation();
590 }
591
592 fn mouse_right_down(
593 editor: &mut Editor,
594 event: &MouseDownEvent,
595 position_map: &PositionMap,
596 text_hitbox: &Hitbox,
597 cx: &mut ViewContext<Editor>,
598 ) {
599 if !text_hitbox.is_hovered(cx) {
600 return;
601 }
602 let point_for_position =
603 position_map.point_for_position(text_hitbox.bounds, event.position);
604 mouse_context_menu::deploy_context_menu(
605 editor,
606 Some(event.position),
607 point_for_position.previous_valid,
608 cx,
609 );
610 cx.stop_propagation();
611 }
612
613 fn mouse_middle_down(
614 editor: &mut Editor,
615 event: &MouseDownEvent,
616 position_map: &PositionMap,
617 text_hitbox: &Hitbox,
618 cx: &mut ViewContext<Editor>,
619 ) {
620 if !text_hitbox.is_hovered(cx) || cx.default_prevented() {
621 return;
622 }
623
624 let point_for_position =
625 position_map.point_for_position(text_hitbox.bounds, event.position);
626 let position = point_for_position.previous_valid;
627
628 editor.select(
629 SelectPhase::BeginColumnar {
630 position,
631 reset: true,
632 goal_column: point_for_position.exact_unclipped.column(),
633 },
634 cx,
635 );
636 }
637
638 fn mouse_up(
639 editor: &mut Editor,
640 event: &MouseUpEvent,
641 position_map: &PositionMap,
642 text_hitbox: &Hitbox,
643 cx: &mut ViewContext<Editor>,
644 ) {
645 let end_selection = editor.has_pending_selection();
646 let pending_nonempty_selections = editor.has_pending_nonempty_selection();
647
648 if end_selection {
649 editor.select(SelectPhase::End, cx);
650 }
651
652 let multi_cursor_setting = EditorSettings::get_global(cx).multi_cursor_modifier;
653 let multi_cursor_modifier = match multi_cursor_setting {
654 MultiCursorModifier::Alt => event.modifiers.secondary(),
655 MultiCursorModifier::CmdOrCtrl => event.modifiers.alt,
656 };
657
658 if !pending_nonempty_selections && multi_cursor_modifier && text_hitbox.is_hovered(cx) {
659 let point = position_map.point_for_position(text_hitbox.bounds, event.position);
660 editor.handle_click_hovered_link(point, event.modifiers, cx);
661
662 cx.stop_propagation();
663 } else if end_selection && pending_nonempty_selections {
664 cx.stop_propagation();
665 } else if cfg!(any(target_os = "linux", target_os = "freebsd"))
666 && event.button == MouseButton::Middle
667 {
668 if !text_hitbox.is_hovered(cx) || editor.read_only(cx) {
669 return;
670 }
671
672 #[cfg(any(target_os = "linux", target_os = "freebsd"))]
673 if EditorSettings::get_global(cx).middle_click_paste {
674 if let Some(text) = cx.read_from_primary().and_then(|item| item.text()) {
675 let point_for_position =
676 position_map.point_for_position(text_hitbox.bounds, event.position);
677 let position = point_for_position.previous_valid;
678
679 editor.select(
680 SelectPhase::Begin {
681 position,
682 add: false,
683 click_count: 1,
684 },
685 cx,
686 );
687 editor.insert(&text, cx);
688 }
689 cx.stop_propagation()
690 }
691 }
692 }
693
694 fn mouse_dragged(
695 editor: &mut Editor,
696 event: &MouseMoveEvent,
697 position_map: &PositionMap,
698 text_bounds: Bounds<Pixels>,
699 cx: &mut ViewContext<Editor>,
700 ) {
701 if !editor.has_pending_selection() {
702 return;
703 }
704
705 let point_for_position = position_map.point_for_position(text_bounds, event.position);
706 let mut scroll_delta = gpui::Point::<f32>::default();
707 let vertical_margin = position_map.line_height.min(text_bounds.size.height / 3.0);
708 let top = text_bounds.origin.y + vertical_margin;
709 let bottom = text_bounds.bottom_left().y - vertical_margin;
710 if event.position.y < top {
711 scroll_delta.y = -scale_vertical_mouse_autoscroll_delta(top - event.position.y);
712 }
713 if event.position.y > bottom {
714 scroll_delta.y = scale_vertical_mouse_autoscroll_delta(event.position.y - bottom);
715 }
716
717 // We need horizontal width of text
718 let style = editor.style.clone().unwrap_or_default();
719 let font_id = cx.text_system().resolve_font(&style.text.font());
720 let font_size = style.text.font_size.to_pixels(cx.rem_size());
721 let em_width = cx
722 .text_system()
723 .typographic_bounds(font_id, font_size, 'm')
724 .unwrap()
725 .size
726 .width;
727
728 let scroll_margin_x = EditorSettings::get_global(cx).horizontal_scroll_margin;
729
730 let scroll_space: Pixels = scroll_margin_x * em_width;
731
732 let left = text_bounds.origin.x + scroll_space;
733 let right = text_bounds.top_right().x - scroll_space;
734
735 if event.position.x < left {
736 scroll_delta.x = -scale_horizontal_mouse_autoscroll_delta(left - event.position.x);
737 }
738 if event.position.x > right {
739 scroll_delta.x = scale_horizontal_mouse_autoscroll_delta(event.position.x - right);
740 }
741
742 editor.select(
743 SelectPhase::Update {
744 position: point_for_position.previous_valid,
745 goal_column: point_for_position.exact_unclipped.column(),
746 scroll_delta,
747 },
748 cx,
749 );
750 }
751
752 fn mouse_moved(
753 editor: &mut Editor,
754 event: &MouseMoveEvent,
755 position_map: &PositionMap,
756 text_hitbox: &Hitbox,
757 gutter_hitbox: &Hitbox,
758 cx: &mut ViewContext<Editor>,
759 ) {
760 let modifiers = event.modifiers;
761 let gutter_hovered = gutter_hitbox.is_hovered(cx);
762 editor.set_gutter_hovered(gutter_hovered, cx);
763
764 // Don't trigger hover popover if mouse is hovering over context menu
765 if text_hitbox.is_hovered(cx) {
766 let point_for_position =
767 position_map.point_for_position(text_hitbox.bounds, event.position);
768
769 editor.update_hovered_link(point_for_position, &position_map.snapshot, modifiers, cx);
770
771 if let Some(point) = point_for_position.as_valid() {
772 let anchor = position_map
773 .snapshot
774 .buffer_snapshot
775 .anchor_before(point.to_offset(&position_map.snapshot, Bias::Left));
776 hover_at(editor, Some(anchor), cx);
777 Self::update_visible_cursor(editor, point, position_map, cx);
778 } else {
779 hover_at(editor, None, cx);
780 }
781 } else {
782 editor.hide_hovered_link(cx);
783 hover_at(editor, None, cx);
784 if gutter_hovered {
785 cx.stop_propagation();
786 }
787 }
788 }
789
790 fn update_visible_cursor(
791 editor: &mut Editor,
792 point: DisplayPoint,
793 position_map: &PositionMap,
794 cx: &mut ViewContext<Editor>,
795 ) {
796 let snapshot = &position_map.snapshot;
797 let Some(hub) = editor.collaboration_hub() else {
798 return;
799 };
800 let start = snapshot.display_snapshot.clip_point(
801 DisplayPoint::new(point.row(), point.column().saturating_sub(1)),
802 Bias::Left,
803 );
804 let end = snapshot.display_snapshot.clip_point(
805 DisplayPoint::new(
806 point.row(),
807 (point.column() + 1).min(snapshot.line_len(point.row())),
808 ),
809 Bias::Right,
810 );
811
812 let range = snapshot
813 .buffer_snapshot
814 .anchor_at(start.to_point(&snapshot.display_snapshot), Bias::Left)
815 ..snapshot
816 .buffer_snapshot
817 .anchor_at(end.to_point(&snapshot.display_snapshot), Bias::Right);
818
819 let Some(selection) = snapshot.remote_selections_in_range(&range, hub, cx).next() else {
820 return;
821 };
822 let key = crate::HoveredCursor {
823 replica_id: selection.replica_id,
824 selection_id: selection.selection.id,
825 };
826 editor.hovered_cursors.insert(
827 key.clone(),
828 cx.spawn(|editor, mut cx| async move {
829 cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
830 editor
831 .update(&mut cx, |editor, cx| {
832 editor.hovered_cursors.remove(&key);
833 cx.notify();
834 })
835 .ok();
836 }),
837 );
838 cx.notify()
839 }
840
841 #[allow(clippy::too_many_arguments)]
842 fn layout_selections(
843 &self,
844 start_anchor: Anchor,
845 end_anchor: Anchor,
846 local_selections: &[Selection<Point>],
847 snapshot: &EditorSnapshot,
848 start_row: DisplayRow,
849 end_row: DisplayRow,
850 cx: &mut WindowContext,
851 ) -> (
852 Vec<(PlayerColor, Vec<SelectionLayout>)>,
853 BTreeMap<DisplayRow, bool>,
854 Option<DisplayPoint>,
855 ) {
856 let mut selections: Vec<(PlayerColor, Vec<SelectionLayout>)> = Vec::new();
857 let mut active_rows = BTreeMap::new();
858 let mut newest_selection_head = None;
859 self.editor.update(cx, |editor, cx| {
860 if editor.show_local_selections {
861 let mut layouts = Vec::new();
862 let newest = editor.selections.newest(cx);
863 for selection in local_selections.iter().cloned() {
864 let is_empty = selection.start == selection.end;
865 let is_newest = selection == newest;
866
867 let layout = SelectionLayout::new(
868 selection,
869 editor.selections.line_mode,
870 editor.cursor_shape,
871 &snapshot.display_snapshot,
872 is_newest,
873 editor.leader_peer_id.is_none(),
874 None,
875 );
876 if is_newest {
877 newest_selection_head = Some(layout.head);
878 }
879
880 for row in cmp::max(layout.active_rows.start.0, start_row.0)
881 ..=cmp::min(layout.active_rows.end.0, end_row.0)
882 {
883 let contains_non_empty_selection =
884 active_rows.entry(DisplayRow(row)).or_insert(!is_empty);
885 *contains_non_empty_selection |= !is_empty;
886 }
887 layouts.push(layout);
888 }
889
890 let player = if editor.read_only(cx) {
891 cx.theme().players().read_only()
892 } else {
893 self.style.local_player
894 };
895
896 selections.push((player, layouts));
897 }
898
899 if let Some(collaboration_hub) = &editor.collaboration_hub {
900 // When following someone, render the local selections in their color.
901 if let Some(leader_id) = editor.leader_peer_id {
902 if let Some(collaborator) = collaboration_hub.collaborators(cx).get(&leader_id)
903 {
904 if let Some(participant_index) = collaboration_hub
905 .user_participant_indices(cx)
906 .get(&collaborator.user_id)
907 {
908 if let Some((local_selection_style, _)) = selections.first_mut() {
909 *local_selection_style = cx
910 .theme()
911 .players()
912 .color_for_participant(participant_index.0);
913 }
914 }
915 }
916 }
917
918 let mut remote_selections = HashMap::default();
919 for selection in snapshot.remote_selections_in_range(
920 &(start_anchor..end_anchor),
921 collaboration_hub.as_ref(),
922 cx,
923 ) {
924 let selection_style =
925 Self::get_participant_color(selection.participant_index, cx);
926
927 // Don't re-render the leader's selections, since the local selections
928 // match theirs.
929 if Some(selection.peer_id) == editor.leader_peer_id {
930 continue;
931 }
932 let key = HoveredCursor {
933 replica_id: selection.replica_id,
934 selection_id: selection.selection.id,
935 };
936
937 let is_shown =
938 editor.show_cursor_names || editor.hovered_cursors.contains_key(&key);
939
940 remote_selections
941 .entry(selection.replica_id)
942 .or_insert((selection_style, Vec::new()))
943 .1
944 .push(SelectionLayout::new(
945 selection.selection,
946 selection.line_mode,
947 selection.cursor_shape,
948 &snapshot.display_snapshot,
949 false,
950 false,
951 if is_shown { selection.user_name } else { None },
952 ));
953 }
954
955 selections.extend(remote_selections.into_values());
956 } else if !editor.is_focused(cx) && editor.show_cursor_when_unfocused {
957 let player = if editor.read_only(cx) {
958 cx.theme().players().read_only()
959 } else {
960 self.style.local_player
961 };
962 let layouts = snapshot
963 .buffer_snapshot
964 .selections_in_range(&(start_anchor..end_anchor), true)
965 .map(move |(_, line_mode, cursor_shape, selection)| {
966 SelectionLayout::new(
967 selection,
968 line_mode,
969 cursor_shape,
970 &snapshot.display_snapshot,
971 false,
972 false,
973 None,
974 )
975 })
976 .collect::<Vec<_>>();
977 selections.push((player, layouts));
978 }
979 });
980 (selections, active_rows, newest_selection_head)
981 }
982
983 fn collect_cursors(
984 &self,
985 snapshot: &EditorSnapshot,
986 cx: &mut WindowContext,
987 ) -> Vec<(DisplayPoint, Hsla)> {
988 let editor = self.editor.read(cx);
989 let mut cursors = Vec::new();
990 let mut skip_local = false;
991 let mut add_cursor = |anchor: Anchor, color| {
992 cursors.push((anchor.to_display_point(&snapshot.display_snapshot), color));
993 };
994 // Remote cursors
995 if let Some(collaboration_hub) = &editor.collaboration_hub {
996 for remote_selection in snapshot.remote_selections_in_range(
997 &(Anchor::min()..Anchor::max()),
998 collaboration_hub.deref(),
999 cx,
1000 ) {
1001 let color = Self::get_participant_color(remote_selection.participant_index, cx);
1002 add_cursor(remote_selection.selection.head(), color.cursor);
1003 if Some(remote_selection.peer_id) == editor.leader_peer_id {
1004 skip_local = true;
1005 }
1006 }
1007 }
1008 // Local cursors
1009 if !skip_local {
1010 let color = cx.theme().players().local().cursor;
1011 editor.selections.disjoint.iter().for_each(|selection| {
1012 add_cursor(selection.head(), color);
1013 });
1014 if let Some(ref selection) = editor.selections.pending_anchor() {
1015 add_cursor(selection.head(), color);
1016 }
1017 }
1018 cursors
1019 }
1020
1021 #[allow(clippy::too_many_arguments)]
1022 fn layout_visible_cursors(
1023 &self,
1024 snapshot: &EditorSnapshot,
1025 selections: &[(PlayerColor, Vec<SelectionLayout>)],
1026 block_start_rows: &HashSet<DisplayRow>,
1027 visible_display_row_range: Range<DisplayRow>,
1028 line_layouts: &[LineWithInvisibles],
1029 text_hitbox: &Hitbox,
1030 content_origin: gpui::Point<Pixels>,
1031 scroll_position: gpui::Point<f32>,
1032 scroll_pixel_position: gpui::Point<Pixels>,
1033 line_height: Pixels,
1034 em_width: Pixels,
1035 autoscroll_containing_element: bool,
1036 cx: &mut WindowContext,
1037 ) -> Vec<CursorLayout> {
1038 let mut autoscroll_bounds = None;
1039 let cursor_layouts = self.editor.update(cx, |editor, cx| {
1040 let mut cursors = Vec::new();
1041 for (player_color, selections) in selections {
1042 for selection in selections {
1043 let cursor_position = selection.head;
1044
1045 let in_range = visible_display_row_range.contains(&cursor_position.row());
1046 if (selection.is_local && !editor.show_local_cursors(cx))
1047 || !in_range
1048 || block_start_rows.contains(&cursor_position.row())
1049 {
1050 continue;
1051 }
1052
1053 let cursor_row_layout = &line_layouts
1054 [cursor_position.row().minus(visible_display_row_range.start) as usize];
1055 let cursor_column = cursor_position.column() as usize;
1056
1057 let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
1058 let mut block_width =
1059 cursor_row_layout.x_for_index(cursor_column + 1) - cursor_character_x;
1060 if block_width == Pixels::ZERO {
1061 block_width = em_width;
1062 }
1063 let block_text = if let CursorShape::Block = selection.cursor_shape {
1064 snapshot
1065 .grapheme_at(cursor_position)
1066 .or_else(|| {
1067 if cursor_column == 0 {
1068 snapshot.placeholder_text().and_then(|s| {
1069 s.graphemes(true).next().map(|s| s.to_string().into())
1070 })
1071 } else {
1072 None
1073 }
1074 })
1075 .and_then(|text| {
1076 let len = text.len();
1077
1078 let font = cursor_row_layout
1079 .font_id_for_index(cursor_column)
1080 .and_then(|cursor_font_id| {
1081 cx.text_system().get_font_for_id(cursor_font_id)
1082 })
1083 .unwrap_or(self.style.text.font());
1084
1085 // Invert the text color for the block cursor. Ensure that the text
1086 // color is opaque enough to be visible against the background color.
1087 //
1088 // 0.75 is an arbitrary threshold to determine if the background color is
1089 // opaque enough to use as a text color.
1090 //
1091 // TODO: In the future we should ensure themes have a `text_inverse` color.
1092 let color = if cx.theme().colors().editor_background.a < 0.75 {
1093 match cx.theme().appearance {
1094 Appearance::Dark => Hsla::black(),
1095 Appearance::Light => Hsla::white(),
1096 }
1097 } else {
1098 cx.theme().colors().editor_background
1099 };
1100
1101 cx.text_system()
1102 .shape_line(
1103 text,
1104 cursor_row_layout.font_size,
1105 &[TextRun {
1106 len,
1107 font,
1108 color,
1109 background_color: None,
1110 strikethrough: None,
1111 underline: None,
1112 }],
1113 )
1114 .log_err()
1115 })
1116 } else {
1117 None
1118 };
1119
1120 let x = cursor_character_x - scroll_pixel_position.x;
1121 let y = (cursor_position.row().as_f32()
1122 - scroll_pixel_position.y / line_height)
1123 * line_height;
1124 if selection.is_newest {
1125 editor.pixel_position_of_newest_cursor = Some(point(
1126 text_hitbox.origin.x + x + block_width / 2.,
1127 text_hitbox.origin.y + y + line_height / 2.,
1128 ));
1129
1130 if autoscroll_containing_element {
1131 let top = text_hitbox.origin.y
1132 + (cursor_position.row().as_f32() - scroll_position.y - 3.).max(0.)
1133 * line_height;
1134 let left = text_hitbox.origin.x
1135 + (cursor_position.column() as f32 - scroll_position.x - 3.)
1136 .max(0.)
1137 * em_width;
1138
1139 let bottom = text_hitbox.origin.y
1140 + (cursor_position.row().as_f32() - scroll_position.y + 4.)
1141 * line_height;
1142 let right = text_hitbox.origin.x
1143 + (cursor_position.column() as f32 - scroll_position.x + 4.)
1144 * em_width;
1145
1146 autoscroll_bounds =
1147 Some(Bounds::from_corners(point(left, top), point(right, bottom)))
1148 }
1149 }
1150
1151 let mut cursor = CursorLayout {
1152 color: player_color.cursor,
1153 block_width,
1154 origin: point(x, y),
1155 line_height,
1156 shape: selection.cursor_shape,
1157 block_text,
1158 cursor_name: None,
1159 };
1160 let cursor_name = selection.user_name.clone().map(|name| CursorName {
1161 string: name,
1162 color: self.style.background,
1163 is_top_row: cursor_position.row().0 == 0,
1164 });
1165 cursor.layout(content_origin, cursor_name, cx);
1166 cursors.push(cursor);
1167 }
1168 }
1169 cursors
1170 });
1171
1172 if let Some(bounds) = autoscroll_bounds {
1173 cx.request_autoscroll(bounds);
1174 }
1175
1176 cursor_layouts
1177 }
1178
1179 fn layout_scrollbars(
1180 &self,
1181 snapshot: &EditorSnapshot,
1182 scrollbar_range_data: ScrollbarRangeData,
1183 scroll_position: gpui::Point<f32>,
1184 non_visible_cursors: bool,
1185 cx: &mut WindowContext,
1186 ) -> AxisPair<Option<ScrollbarLayout>> {
1187 let letter_size = scrollbar_range_data.letter_size;
1188 let text_units_per_page = axis_pair(
1189 scrollbar_range_data.scrollbar_bounds.size.width / letter_size.width,
1190 scrollbar_range_data.scrollbar_bounds.size.height / letter_size.height,
1191 );
1192
1193 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
1194 let show_scrollbars = match scrollbar_settings.show {
1195 ShowScrollbar::Auto => {
1196 let editor = self.editor.read(cx);
1197 let is_singleton = editor.is_singleton(cx);
1198 // Git
1199 (is_singleton && scrollbar_settings.git_diff && !snapshot.diff_map.is_empty())
1200 ||
1201 // Buffer Search Results
1202 (is_singleton && scrollbar_settings.search_results && editor.has_background_highlights::<BufferSearchHighlights>())
1203 ||
1204 // Selected Symbol Occurrences
1205 (is_singleton && scrollbar_settings.selected_symbol && (editor.has_background_highlights::<DocumentHighlightRead>() || editor.has_background_highlights::<DocumentHighlightWrite>()))
1206 ||
1207 // Diagnostics
1208 (is_singleton && scrollbar_settings.diagnostics && snapshot.buffer_snapshot.has_diagnostics())
1209 ||
1210 // Cursors out of sight
1211 non_visible_cursors
1212 ||
1213 // Scrollmanager
1214 editor.scroll_manager.scrollbars_visible()
1215 }
1216 ShowScrollbar::System => self.editor.read(cx).scroll_manager.scrollbars_visible(),
1217 ShowScrollbar::Always => true,
1218 ShowScrollbar::Never => false,
1219 };
1220
1221 let axes: AxisPair<bool> = scrollbar_settings.axes.into();
1222
1223 if snapshot.mode != EditorMode::Full {
1224 return axis_pair(None, None);
1225 }
1226
1227 let visible_range = axis_pair(
1228 axes.horizontal
1229 .then(|| scroll_position.x..scroll_position.x + text_units_per_page.horizontal),
1230 axes.vertical
1231 .then(|| scroll_position.y..scroll_position.y + text_units_per_page.vertical),
1232 );
1233
1234 // If a drag took place after we started dragging the scrollbar,
1235 // cancel the scrollbar drag.
1236 if cx.has_active_drag() {
1237 self.editor.update(cx, |editor, cx| {
1238 editor
1239 .scroll_manager
1240 .set_is_dragging_scrollbar(Axis::Horizontal, false, cx);
1241 editor
1242 .scroll_manager
1243 .set_is_dragging_scrollbar(Axis::Vertical, false, cx);
1244 });
1245 }
1246
1247 let text_bounds = scrollbar_range_data.scrollbar_bounds;
1248
1249 let track_bounds = axis_pair(
1250 axes.horizontal.then(|| {
1251 Bounds::from_corners(
1252 point(
1253 text_bounds.bottom_left().x,
1254 text_bounds.bottom_left().y - self.style.scrollbar_width,
1255 ),
1256 point(
1257 text_bounds.bottom_right().x
1258 - if axes.vertical {
1259 self.style.scrollbar_width
1260 } else {
1261 px(0.)
1262 },
1263 text_bounds.bottom_right().y,
1264 ),
1265 )
1266 }),
1267 axes.vertical.then(|| {
1268 Bounds::from_corners(
1269 point(self.scrollbar_left(&text_bounds), text_bounds.origin.y),
1270 text_bounds.bottom_right(),
1271 )
1272 }),
1273 );
1274
1275 let scroll_range_size = scrollbar_range_data.scroll_range.size;
1276 let total_text_units = axis_pair(
1277 Some(scroll_range_size.width / letter_size.width),
1278 Some(scroll_range_size.height / letter_size.height),
1279 );
1280
1281 let thumb_size = axis_pair(
1282 total_text_units
1283 .horizontal
1284 .zip(track_bounds.horizontal)
1285 .map(|(total_text_units_x, track_bounds_x)| {
1286 let thumb_percent =
1287 (text_units_per_page.horizontal / total_text_units_x).min(1.);
1288
1289 track_bounds_x.size.width * thumb_percent
1290 }),
1291 total_text_units.vertical.zip(track_bounds.vertical).map(
1292 |(total_text_units_y, track_bounds_y)| {
1293 let thumb_percent = (text_units_per_page.vertical / total_text_units_y).min(1.);
1294
1295 track_bounds_y.size.height * thumb_percent
1296 },
1297 ),
1298 );
1299
1300 // NOTE: Space not taken by track bounds divided by text units not on screen
1301 let text_unit_size = axis_pair(
1302 thumb_size
1303 .horizontal
1304 .zip(track_bounds.horizontal)
1305 .zip(total_text_units.horizontal)
1306 .map(|((thumb_size, track_bounds), total_text_units)| {
1307 (track_bounds.size.width - thumb_size)
1308 / (total_text_units - text_units_per_page.horizontal).max(0.)
1309 }),
1310 thumb_size
1311 .vertical
1312 .zip(track_bounds.vertical)
1313 .zip(total_text_units.vertical)
1314 .map(|((thumb_size, track_bounds), total_text_units)| {
1315 (track_bounds.size.height - thumb_size)
1316 / (total_text_units - text_units_per_page.vertical).max(0.)
1317 }),
1318 );
1319
1320 let horizontal_scrollbar = track_bounds
1321 .horizontal
1322 .zip(visible_range.horizontal)
1323 .zip(text_unit_size.horizontal)
1324 .zip(thumb_size.horizontal)
1325 .map(
1326 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1327 hitbox: cx.insert_hitbox(track_bounds, false),
1328 visible_range,
1329 text_unit_size,
1330 visible: show_scrollbars,
1331 thumb_size,
1332 axis: Axis::Horizontal,
1333 },
1334 );
1335
1336 let vertical_scrollbar = track_bounds
1337 .vertical
1338 .zip(visible_range.vertical)
1339 .zip(text_unit_size.vertical)
1340 .zip(thumb_size.vertical)
1341 .map(
1342 |(((track_bounds, visible_range), text_unit_size), thumb_size)| ScrollbarLayout {
1343 hitbox: cx.insert_hitbox(track_bounds, false),
1344 visible_range,
1345 text_unit_size,
1346 visible: show_scrollbars,
1347 thumb_size,
1348 axis: Axis::Vertical,
1349 },
1350 );
1351
1352 axis_pair(horizontal_scrollbar, vertical_scrollbar)
1353 }
1354
1355 #[allow(clippy::too_many_arguments)]
1356 fn prepaint_crease_toggles(
1357 &self,
1358 crease_toggles: &mut [Option<AnyElement>],
1359 line_height: Pixels,
1360 gutter_dimensions: &GutterDimensions,
1361 gutter_settings: crate::editor_settings::Gutter,
1362 scroll_pixel_position: gpui::Point<Pixels>,
1363 gutter_hitbox: &Hitbox,
1364 cx: &mut WindowContext,
1365 ) {
1366 for (ix, crease_toggle) in crease_toggles.iter_mut().enumerate() {
1367 if let Some(crease_toggle) = crease_toggle {
1368 debug_assert!(gutter_settings.folds);
1369 let available_space = size(
1370 AvailableSpace::MinContent,
1371 AvailableSpace::Definite(line_height * 0.55),
1372 );
1373 let crease_toggle_size = crease_toggle.layout_as_root(available_space, cx);
1374
1375 let position = point(
1376 gutter_dimensions.width - gutter_dimensions.right_padding,
1377 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1378 );
1379 let centering_offset = point(
1380 (gutter_dimensions.fold_area_width() - crease_toggle_size.width) / 2.,
1381 (line_height - crease_toggle_size.height) / 2.,
1382 );
1383 let origin = gutter_hitbox.origin + position + centering_offset;
1384 crease_toggle.prepaint_as_root(origin, available_space, cx);
1385 }
1386 }
1387 }
1388
1389 #[allow(clippy::too_many_arguments)]
1390 fn prepaint_crease_trailers(
1391 &self,
1392 trailers: Vec<Option<AnyElement>>,
1393 lines: &[LineWithInvisibles],
1394 line_height: Pixels,
1395 content_origin: gpui::Point<Pixels>,
1396 scroll_pixel_position: gpui::Point<Pixels>,
1397 em_width: Pixels,
1398 cx: &mut WindowContext,
1399 ) -> Vec<Option<CreaseTrailerLayout>> {
1400 trailers
1401 .into_iter()
1402 .enumerate()
1403 .map(|(ix, element)| {
1404 let mut element = element?;
1405 let available_space = size(
1406 AvailableSpace::MinContent,
1407 AvailableSpace::Definite(line_height),
1408 );
1409 let size = element.layout_as_root(available_space, cx);
1410
1411 let line = &lines[ix];
1412 let padding = if line.width == Pixels::ZERO {
1413 Pixels::ZERO
1414 } else {
1415 4. * em_width
1416 };
1417 let position = point(
1418 scroll_pixel_position.x + line.width + padding,
1419 ix as f32 * line_height - (scroll_pixel_position.y % line_height),
1420 );
1421 let centering_offset = point(px(0.), (line_height - size.height) / 2.);
1422 let origin = content_origin + position + centering_offset;
1423 element.prepaint_as_root(origin, available_space, cx);
1424 Some(CreaseTrailerLayout {
1425 element,
1426 bounds: Bounds::new(origin, size),
1427 })
1428 })
1429 .collect()
1430 }
1431
1432 // Folds contained in a hunk are ignored apart from shrinking visual size
1433 // If a fold contains any hunks then that fold line is marked as modified
1434 fn layout_gutter_git_hunks(
1435 &self,
1436 line_height: Pixels,
1437 gutter_hitbox: &Hitbox,
1438 display_rows: Range<DisplayRow>,
1439 anchor_range: Range<Anchor>,
1440 snapshot: &EditorSnapshot,
1441 cx: &mut WindowContext,
1442 ) -> Vec<(DisplayDiffHunk, Option<Hitbox>)> {
1443 let buffer_snapshot = &snapshot.buffer_snapshot;
1444 let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(snapshot);
1445 let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(snapshot);
1446
1447 let git_gutter_setting = ProjectSettings::get_global(cx)
1448 .git
1449 .git_gutter
1450 .unwrap_or_default();
1451
1452 self.editor.update(cx, |editor, cx| {
1453 let expanded_hunks = &editor.diff_map.hunks;
1454 let expanded_hunks_start_ix = expanded_hunks
1455 .binary_search_by(|hunk| {
1456 hunk.hunk_range
1457 .end
1458 .cmp(&anchor_range.start, &buffer_snapshot)
1459 .then(Ordering::Less)
1460 })
1461 .unwrap_err();
1462 let mut expanded_hunks = expanded_hunks[expanded_hunks_start_ix..].iter().peekable();
1463
1464 let mut display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)> = editor
1465 .diff_map
1466 .snapshot
1467 .diff_hunks_in_range(buffer_start..buffer_end, &buffer_snapshot)
1468 .filter_map(|hunk| {
1469 let display_hunk = diff_hunk_to_display(&hunk, snapshot);
1470
1471 if let DisplayDiffHunk::Unfolded {
1472 multi_buffer_range,
1473 status,
1474 ..
1475 } = &display_hunk
1476 {
1477 let mut is_expanded = false;
1478 while let Some(expanded_hunk) = expanded_hunks.peek() {
1479 match expanded_hunk
1480 .hunk_range
1481 .start
1482 .cmp(&multi_buffer_range.start, &buffer_snapshot)
1483 {
1484 Ordering::Less => {
1485 expanded_hunks.next();
1486 }
1487 Ordering::Equal => {
1488 is_expanded = true;
1489 break;
1490 }
1491 Ordering::Greater => {
1492 break;
1493 }
1494 }
1495 }
1496 match status {
1497 DiffHunkStatus::Added => {}
1498 DiffHunkStatus::Modified => {}
1499 DiffHunkStatus::Removed => {
1500 if is_expanded {
1501 return None;
1502 }
1503 }
1504 }
1505 }
1506
1507 Some(display_hunk)
1508 })
1509 .dedup()
1510 .map(|hunk| (hunk, None))
1511 .collect();
1512
1513 if let GitGutterSetting::TrackedFiles = git_gutter_setting {
1514 for (hunk, hitbox) in &mut display_hunks {
1515 if let DisplayDiffHunk::Unfolded { .. } = hunk {
1516 let hunk_bounds = Self::diff_hunk_bounds(
1517 snapshot,
1518 line_height,
1519 gutter_hitbox.bounds,
1520 &hunk,
1521 );
1522 *hitbox = Some(cx.insert_hitbox(hunk_bounds, true));
1523 };
1524 }
1525 }
1526
1527 display_hunks
1528 })
1529 }
1530
1531 #[allow(clippy::too_many_arguments)]
1532 fn layout_inline_blame(
1533 &self,
1534 display_row: DisplayRow,
1535 display_snapshot: &DisplaySnapshot,
1536 line_layout: &LineWithInvisibles,
1537 crease_trailer: Option<&CreaseTrailerLayout>,
1538 em_width: Pixels,
1539 content_origin: gpui::Point<Pixels>,
1540 scroll_pixel_position: gpui::Point<Pixels>,
1541 line_height: Pixels,
1542 cx: &mut WindowContext,
1543 ) -> Option<AnyElement> {
1544 if !self
1545 .editor
1546 .update(cx, |editor, cx| editor.render_git_blame_inline(cx))
1547 {
1548 return None;
1549 }
1550
1551 let workspace = self
1552 .editor
1553 .read(cx)
1554 .workspace
1555 .as_ref()
1556 .map(|(w, _)| w.clone());
1557
1558 let display_point = DisplayPoint::new(display_row, 0);
1559 let buffer_row = MultiBufferRow(display_point.to_point(display_snapshot).row);
1560
1561 let blame = self.editor.read(cx).blame.clone()?;
1562 let blame_entry = blame
1563 .update(cx, |blame, cx| {
1564 blame.blame_for_rows([Some(buffer_row)], cx).next()
1565 })
1566 .flatten()?;
1567
1568 let mut element =
1569 render_inline_blame_entry(&blame, blame_entry, &self.style, workspace, cx);
1570
1571 let start_y = content_origin.y
1572 + line_height * (display_row.as_f32() - scroll_pixel_position.y / line_height);
1573
1574 let start_x = {
1575 const INLINE_BLAME_PADDING_EM_WIDTHS: f32 = 6.;
1576
1577 let line_end = if let Some(crease_trailer) = crease_trailer {
1578 crease_trailer.bounds.right()
1579 } else {
1580 content_origin.x - scroll_pixel_position.x + line_layout.width
1581 };
1582 let padded_line_end = line_end + em_width * INLINE_BLAME_PADDING_EM_WIDTHS;
1583
1584 let min_column_in_pixels = ProjectSettings::get_global(cx)
1585 .git
1586 .inline_blame
1587 .and_then(|settings| settings.min_column)
1588 .map(|col| self.column_pixels(col as usize, cx))
1589 .unwrap_or(px(0.));
1590 let min_start = content_origin.x - scroll_pixel_position.x + min_column_in_pixels;
1591
1592 cmp::max(padded_line_end, min_start)
1593 };
1594
1595 let absolute_offset = point(start_x, start_y);
1596 element.prepaint_as_root(absolute_offset, AvailableSpace::min_size(), cx);
1597
1598 Some(element)
1599 }
1600
1601 #[allow(clippy::too_many_arguments)]
1602 fn layout_blame_entries(
1603 &self,
1604 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1605 em_width: Pixels,
1606 scroll_position: gpui::Point<f32>,
1607 line_height: Pixels,
1608 gutter_hitbox: &Hitbox,
1609 max_width: Option<Pixels>,
1610 cx: &mut WindowContext,
1611 ) -> Option<Vec<AnyElement>> {
1612 if !self
1613 .editor
1614 .update(cx, |editor, cx| editor.render_git_blame_gutter(cx))
1615 {
1616 return None;
1617 }
1618
1619 let blame = self.editor.read(cx).blame.clone()?;
1620 let blamed_rows: Vec<_> = blame.update(cx, |blame, cx| {
1621 blame.blame_for_rows(buffer_rows, cx).collect()
1622 });
1623
1624 let width = if let Some(max_width) = max_width {
1625 AvailableSpace::Definite(max_width)
1626 } else {
1627 AvailableSpace::MaxContent
1628 };
1629 let scroll_top = scroll_position.y * line_height;
1630 let start_x = em_width;
1631
1632 let mut last_used_color: Option<(PlayerColor, Oid)> = None;
1633
1634 let shaped_lines = blamed_rows
1635 .into_iter()
1636 .enumerate()
1637 .flat_map(|(ix, blame_entry)| {
1638 if let Some(blame_entry) = blame_entry {
1639 let mut element = render_blame_entry(
1640 ix,
1641 &blame,
1642 blame_entry,
1643 &self.style,
1644 &mut last_used_color,
1645 self.editor.clone(),
1646 cx,
1647 );
1648
1649 let start_y = ix as f32 * line_height - (scroll_top % line_height);
1650 let absolute_offset = gutter_hitbox.origin + point(start_x, start_y);
1651
1652 element.prepaint_as_root(
1653 absolute_offset,
1654 size(width, AvailableSpace::MinContent),
1655 cx,
1656 );
1657
1658 Some(element)
1659 } else {
1660 None
1661 }
1662 })
1663 .collect();
1664
1665 Some(shaped_lines)
1666 }
1667
1668 #[allow(clippy::too_many_arguments)]
1669 fn layout_indent_guides(
1670 &self,
1671 content_origin: gpui::Point<Pixels>,
1672 text_origin: gpui::Point<Pixels>,
1673 visible_buffer_range: Range<MultiBufferRow>,
1674 scroll_pixel_position: gpui::Point<Pixels>,
1675 line_height: Pixels,
1676 snapshot: &DisplaySnapshot,
1677 cx: &mut WindowContext,
1678 ) -> Option<Vec<IndentGuideLayout>> {
1679 let indent_guides = self.editor.update(cx, |editor, cx| {
1680 editor.indent_guides(visible_buffer_range, snapshot, cx)
1681 })?;
1682
1683 let active_indent_guide_indices = self.editor.update(cx, |editor, cx| {
1684 editor
1685 .find_active_indent_guide_indices(&indent_guides, snapshot, cx)
1686 .unwrap_or_default()
1687 });
1688
1689 Some(
1690 indent_guides
1691 .into_iter()
1692 .enumerate()
1693 .filter_map(|(i, indent_guide)| {
1694 let single_indent_width =
1695 self.column_pixels(indent_guide.tab_size as usize, cx);
1696 let total_width = single_indent_width * indent_guide.depth as f32;
1697 let start_x = content_origin.x + total_width - scroll_pixel_position.x;
1698 if start_x >= text_origin.x {
1699 let (offset_y, length) = Self::calculate_indent_guide_bounds(
1700 indent_guide.multibuffer_row_range.clone(),
1701 line_height,
1702 snapshot,
1703 );
1704
1705 let start_y = content_origin.y + offset_y - scroll_pixel_position.y;
1706
1707 Some(IndentGuideLayout {
1708 origin: point(start_x, start_y),
1709 length,
1710 single_indent_width,
1711 depth: indent_guide.depth,
1712 active: active_indent_guide_indices.contains(&i),
1713 settings: indent_guide.settings,
1714 })
1715 } else {
1716 None
1717 }
1718 })
1719 .collect(),
1720 )
1721 }
1722
1723 fn calculate_indent_guide_bounds(
1724 row_range: Range<MultiBufferRow>,
1725 line_height: Pixels,
1726 snapshot: &DisplaySnapshot,
1727 ) -> (gpui::Pixels, gpui::Pixels) {
1728 let start_point = Point::new(row_range.start.0, 0);
1729 let end_point = Point::new(row_range.end.0, 0);
1730
1731 let row_range = start_point.to_display_point(snapshot).row()
1732 ..end_point.to_display_point(snapshot).row();
1733
1734 let mut prev_line = start_point;
1735 prev_line.row = prev_line.row.saturating_sub(1);
1736 let prev_line = prev_line.to_display_point(snapshot).row();
1737
1738 let mut cons_line = end_point;
1739 cons_line.row += 1;
1740 let cons_line = cons_line.to_display_point(snapshot).row();
1741
1742 let mut offset_y = row_range.start.0 as f32 * line_height;
1743 let mut length = (cons_line.0.saturating_sub(row_range.start.0)) as f32 * line_height;
1744
1745 // If we are at the end of the buffer, ensure that the indent guide extends to the end of the line.
1746 if row_range.end == cons_line {
1747 length += line_height;
1748 }
1749
1750 // If there is a block (e.g. diagnostic) in between the start of the indent guide and the line above,
1751 // we want to extend the indent guide to the start of the block.
1752 let mut block_height = 0;
1753 let mut block_offset = 0;
1754 let mut found_excerpt_header = false;
1755 for (_, block) in snapshot.blocks_in_range(prev_line..row_range.start) {
1756 if matches!(block, Block::ExcerptBoundary { .. }) {
1757 found_excerpt_header = true;
1758 break;
1759 }
1760 block_offset += block.height();
1761 block_height += block.height();
1762 }
1763 if !found_excerpt_header {
1764 offset_y -= block_offset as f32 * line_height;
1765 length += block_height as f32 * line_height;
1766 }
1767
1768 // If there is a block (e.g. diagnostic) at the end of an multibuffer excerpt,
1769 // we want to ensure that the indent guide stops before the excerpt header.
1770 let mut block_height = 0;
1771 let mut found_excerpt_header = false;
1772 for (_, block) in snapshot.blocks_in_range(row_range.end..cons_line) {
1773 if matches!(block, Block::ExcerptBoundary { .. }) {
1774 found_excerpt_header = true;
1775 }
1776 block_height += block.height();
1777 }
1778 if found_excerpt_header {
1779 length -= block_height as f32 * line_height;
1780 }
1781
1782 (offset_y, length)
1783 }
1784
1785 #[allow(clippy::too_many_arguments)]
1786 fn layout_run_indicators(
1787 &self,
1788 line_height: Pixels,
1789 range: Range<DisplayRow>,
1790 scroll_pixel_position: gpui::Point<Pixels>,
1791 gutter_dimensions: &GutterDimensions,
1792 gutter_hitbox: &Hitbox,
1793 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1794 snapshot: &EditorSnapshot,
1795 cx: &mut WindowContext,
1796 ) -> Vec<AnyElement> {
1797 self.editor.update(cx, |editor, cx| {
1798 let active_task_indicator_row =
1799 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1800 deployed_from_indicator,
1801 actions,
1802 ..
1803 })) = editor.context_menu.borrow().as_ref()
1804 {
1805 actions
1806 .tasks
1807 .as_ref()
1808 .map(|tasks| tasks.position.to_display_point(snapshot).row())
1809 .or(*deployed_from_indicator)
1810 } else {
1811 None
1812 };
1813
1814 let offset_range_start = snapshot
1815 .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
1816 .to_offset(&snapshot.buffer_snapshot);
1817 let offset_range_end = snapshot
1818 .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
1819 .to_offset(&snapshot.buffer_snapshot);
1820
1821 editor
1822 .tasks
1823 .iter()
1824 .filter_map(|(_, tasks)| {
1825 if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
1826 return None;
1827 }
1828 let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
1829 let multibuffer_row = MultiBufferRow(multibuffer_point.row);
1830 let buffer_folded = snapshot
1831 .buffer_snapshot
1832 .buffer_line_for_row(multibuffer_row)
1833 .map(|(buffer_snapshot, _)| buffer_snapshot.remote_id())
1834 .map(|buffer_id| editor.buffer_folded(buffer_id, cx))
1835 .unwrap_or(false);
1836 if buffer_folded {
1837 return None;
1838 }
1839
1840 if snapshot.is_line_folded(multibuffer_row) {
1841 // Skip folded indicators, unless it's the starting line of a fold.
1842 if multibuffer_row
1843 .0
1844 .checked_sub(1)
1845 .map_or(false, |previous_row| {
1846 snapshot.is_line_folded(MultiBufferRow(previous_row))
1847 })
1848 {
1849 return None;
1850 }
1851 }
1852 let display_row = multibuffer_point.to_display_point(snapshot).row();
1853 let button = editor.render_run_indicator(
1854 &self.style,
1855 Some(display_row) == active_task_indicator_row,
1856 display_row,
1857 cx,
1858 );
1859
1860 let button = prepaint_gutter_button(
1861 button,
1862 display_row,
1863 line_height,
1864 gutter_dimensions,
1865 scroll_pixel_position,
1866 gutter_hitbox,
1867 rows_with_hunk_bounds,
1868 cx,
1869 );
1870 Some(button)
1871 })
1872 .collect_vec()
1873 })
1874 }
1875
1876 #[allow(clippy::too_many_arguments)]
1877 fn layout_code_actions_indicator(
1878 &self,
1879 line_height: Pixels,
1880 newest_selection_head: DisplayPoint,
1881 scroll_pixel_position: gpui::Point<Pixels>,
1882 gutter_dimensions: &GutterDimensions,
1883 gutter_hitbox: &Hitbox,
1884 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
1885 cx: &mut WindowContext,
1886 ) -> Option<AnyElement> {
1887 let mut active = false;
1888 let mut button = None;
1889 let row = newest_selection_head.row();
1890 self.editor.update(cx, |editor, cx| {
1891 if let Some(crate::CodeContextMenu::CodeActions(CodeActionsMenu {
1892 deployed_from_indicator,
1893 ..
1894 })) = editor.context_menu.borrow().as_ref()
1895 {
1896 active = deployed_from_indicator.map_or(true, |indicator_row| indicator_row == row);
1897 };
1898 button = editor.render_code_actions_indicator(&self.style, row, active, cx);
1899 });
1900
1901 let button = prepaint_gutter_button(
1902 button?,
1903 row,
1904 line_height,
1905 gutter_dimensions,
1906 scroll_pixel_position,
1907 gutter_hitbox,
1908 rows_with_hunk_bounds,
1909 cx,
1910 );
1911
1912 Some(button)
1913 }
1914
1915 fn get_participant_color(
1916 participant_index: Option<ParticipantIndex>,
1917 cx: &WindowContext,
1918 ) -> PlayerColor {
1919 if let Some(index) = participant_index {
1920 cx.theme().players().color_for_participant(index.0)
1921 } else {
1922 cx.theme().players().absent()
1923 }
1924 }
1925
1926 fn calculate_relative_line_numbers(
1927 &self,
1928 snapshot: &EditorSnapshot,
1929 rows: &Range<DisplayRow>,
1930 relative_to: Option<DisplayRow>,
1931 ) -> HashMap<DisplayRow, DisplayRowDelta> {
1932 let mut relative_rows: HashMap<DisplayRow, DisplayRowDelta> = Default::default();
1933 let Some(relative_to) = relative_to else {
1934 return relative_rows;
1935 };
1936
1937 let start = rows.start.min(relative_to);
1938 let end = rows.end.max(relative_to);
1939
1940 let buffer_rows = snapshot
1941 .buffer_rows(start)
1942 .take(1 + end.minus(start) as usize)
1943 .collect::<Vec<_>>();
1944
1945 let head_idx = relative_to.minus(start);
1946 let mut delta = 1;
1947 let mut i = head_idx + 1;
1948 while i < buffer_rows.len() as u32 {
1949 if buffer_rows[i as usize].is_some() {
1950 if rows.contains(&DisplayRow(i + start.0)) {
1951 relative_rows.insert(DisplayRow(i + start.0), delta);
1952 }
1953 delta += 1;
1954 }
1955 i += 1;
1956 }
1957 delta = 1;
1958 i = head_idx.min(buffer_rows.len() as u32 - 1);
1959 while i > 0 && buffer_rows[i as usize].is_none() {
1960 i -= 1;
1961 }
1962
1963 while i > 0 {
1964 i -= 1;
1965 if buffer_rows[i as usize].is_some() {
1966 if rows.contains(&DisplayRow(i + start.0)) {
1967 relative_rows.insert(DisplayRow(i + start.0), delta);
1968 }
1969 delta += 1;
1970 }
1971 }
1972
1973 relative_rows
1974 }
1975
1976 fn layout_line_numbers(
1977 &self,
1978 rows: Range<DisplayRow>,
1979 buffer_rows: impl Iterator<Item = Option<MultiBufferRow>>,
1980 active_rows: &BTreeMap<DisplayRow, bool>,
1981 newest_selection_head: Option<DisplayPoint>,
1982 snapshot: &EditorSnapshot,
1983 cx: &mut WindowContext,
1984 ) -> Vec<Option<ShapedLine>> {
1985 let include_line_numbers = snapshot.show_line_numbers.unwrap_or_else(|| {
1986 EditorSettings::get_global(cx).gutter.line_numbers && snapshot.mode == EditorMode::Full
1987 });
1988 if !include_line_numbers {
1989 return Vec::new();
1990 }
1991
1992 let (newest_selection_head, is_relative) = self.editor.update(cx, |editor, cx| {
1993 let newest_selection_head = newest_selection_head.unwrap_or_else(|| {
1994 let newest = editor.selections.newest::<Point>(cx);
1995 SelectionLayout::new(
1996 newest,
1997 editor.selections.line_mode,
1998 editor.cursor_shape,
1999 &snapshot.display_snapshot,
2000 true,
2001 true,
2002 None,
2003 )
2004 .head
2005 });
2006 let is_relative = editor.should_use_relative_line_numbers(cx);
2007 (newest_selection_head, is_relative)
2008 });
2009 let font_size = self.style.text.font_size.to_pixels(cx.rem_size());
2010
2011 let relative_to = if is_relative {
2012 Some(newest_selection_head.row())
2013 } else {
2014 None
2015 };
2016 let relative_rows = self.calculate_relative_line_numbers(snapshot, &rows, relative_to);
2017 let mut line_number = String::new();
2018 buffer_rows
2019 .into_iter()
2020 .enumerate()
2021 .map(|(ix, multibuffer_row)| {
2022 let multibuffer_row = multibuffer_row?;
2023 let display_row = DisplayRow(rows.start.0 + ix as u32);
2024 let color = if active_rows.contains_key(&display_row) {
2025 cx.theme().colors().editor_active_line_number
2026 } else {
2027 cx.theme().colors().editor_line_number
2028 };
2029 line_number.clear();
2030 let default_number = multibuffer_row.0 + 1;
2031 let number = relative_rows
2032 .get(&DisplayRow(ix as u32 + rows.start.0))
2033 .unwrap_or(&default_number);
2034 write!(&mut line_number, "{number}").unwrap();
2035 let run = TextRun {
2036 len: line_number.len(),
2037 font: self.style.text.font(),
2038 color,
2039 background_color: None,
2040 underline: None,
2041 strikethrough: None,
2042 };
2043 let shaped_line = cx
2044 .text_system()
2045 .shape_line(line_number.clone().into(), font_size, &[run])
2046 .unwrap();
2047 Some(shaped_line)
2048 })
2049 .collect()
2050 }
2051
2052 fn layout_crease_toggles(
2053 &self,
2054 rows: Range<DisplayRow>,
2055 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2056 active_rows: &BTreeMap<DisplayRow, bool>,
2057 snapshot: &EditorSnapshot,
2058 cx: &mut WindowContext,
2059 ) -> Vec<Option<AnyElement>> {
2060 let include_fold_statuses = EditorSettings::get_global(cx).gutter.folds
2061 && snapshot.mode == EditorMode::Full
2062 && self.editor.read(cx).is_singleton(cx);
2063 if include_fold_statuses {
2064 buffer_rows
2065 .into_iter()
2066 .enumerate()
2067 .map(|(ix, row)| {
2068 if let Some(multibuffer_row) = row {
2069 let display_row = DisplayRow(rows.start.0 + ix as u32);
2070 let active = active_rows.contains_key(&display_row);
2071 snapshot.render_crease_toggle(
2072 multibuffer_row,
2073 active,
2074 self.editor.clone(),
2075 cx,
2076 )
2077 } else {
2078 None
2079 }
2080 })
2081 .collect()
2082 } else {
2083 Vec::new()
2084 }
2085 }
2086
2087 fn layout_crease_trailers(
2088 &self,
2089 buffer_rows: impl IntoIterator<Item = Option<MultiBufferRow>>,
2090 snapshot: &EditorSnapshot,
2091 cx: &mut WindowContext,
2092 ) -> Vec<Option<AnyElement>> {
2093 buffer_rows
2094 .into_iter()
2095 .map(|row| {
2096 if let Some(multibuffer_row) = row {
2097 snapshot.render_crease_trailer(multibuffer_row, cx)
2098 } else {
2099 None
2100 }
2101 })
2102 .collect()
2103 }
2104
2105 fn layout_lines(
2106 rows: Range<DisplayRow>,
2107 snapshot: &EditorSnapshot,
2108 style: &EditorStyle,
2109 editor_width: Pixels,
2110 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2111 cx: &mut WindowContext,
2112 ) -> Vec<LineWithInvisibles> {
2113 if rows.start >= rows.end {
2114 return Vec::new();
2115 }
2116
2117 // Show the placeholder when the editor is empty
2118 if snapshot.is_empty() {
2119 let font_size = style.text.font_size.to_pixels(cx.rem_size());
2120 let placeholder_color = cx.theme().colors().text_placeholder;
2121 let placeholder_text = snapshot.placeholder_text();
2122
2123 let placeholder_lines = placeholder_text
2124 .as_ref()
2125 .map_or("", AsRef::as_ref)
2126 .split('\n')
2127 .skip(rows.start.0 as usize)
2128 .chain(iter::repeat(""))
2129 .take(rows.len());
2130 placeholder_lines
2131 .filter_map(move |line| {
2132 let run = TextRun {
2133 len: line.len(),
2134 font: style.text.font(),
2135 color: placeholder_color,
2136 background_color: None,
2137 underline: Default::default(),
2138 strikethrough: None,
2139 };
2140 cx.text_system()
2141 .shape_line(line.to_string().into(), font_size, &[run])
2142 .log_err()
2143 })
2144 .map(|line| LineWithInvisibles {
2145 width: line.width,
2146 len: line.len,
2147 fragments: smallvec![LineFragment::Text(line)],
2148 invisibles: Vec::new(),
2149 font_size,
2150 })
2151 .collect()
2152 } else {
2153 let chunks = snapshot.highlighted_chunks(rows.clone(), true, style);
2154 LineWithInvisibles::from_chunks(
2155 chunks,
2156 &style,
2157 MAX_LINE_LEN,
2158 rows.len(),
2159 snapshot.mode,
2160 editor_width,
2161 is_row_soft_wrapped,
2162 cx,
2163 )
2164 }
2165 }
2166
2167 fn prepaint_lines(
2168 &self,
2169 start_row: DisplayRow,
2170 line_layouts: &mut [LineWithInvisibles],
2171 line_height: Pixels,
2172 scroll_pixel_position: gpui::Point<Pixels>,
2173 content_origin: gpui::Point<Pixels>,
2174 cx: &mut WindowContext,
2175 ) -> SmallVec<[AnyElement; 1]> {
2176 let mut line_elements = SmallVec::new();
2177 for (ix, line) in line_layouts.iter_mut().enumerate() {
2178 let row = start_row + DisplayRow(ix as u32);
2179 line.prepaint(
2180 line_height,
2181 scroll_pixel_position,
2182 row,
2183 content_origin,
2184 &mut line_elements,
2185 cx,
2186 );
2187 }
2188 line_elements
2189 }
2190
2191 #[allow(clippy::too_many_arguments)]
2192 fn render_block(
2193 &self,
2194 block: &Block,
2195 available_width: AvailableSpace,
2196 block_id: BlockId,
2197 block_row_start: DisplayRow,
2198 snapshot: &EditorSnapshot,
2199 text_x: Pixels,
2200 rows: &Range<DisplayRow>,
2201 line_layouts: &[LineWithInvisibles],
2202 gutter_dimensions: &GutterDimensions,
2203 line_height: Pixels,
2204 em_width: Pixels,
2205 text_hitbox: &Hitbox,
2206 editor_width: Pixels,
2207 scroll_width: &mut Pixels,
2208 resized_blocks: &mut HashMap<CustomBlockId, u32>,
2209 selections: &[Selection<Point>],
2210 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2211 cx: &mut WindowContext,
2212 ) -> (AnyElement, Size<Pixels>) {
2213 let header_padding = px(6.0);
2214 let mut element = match block {
2215 Block::Custom(block) => {
2216 let block_start = block.start().to_point(&snapshot.buffer_snapshot);
2217 let block_end = block.end().to_point(&snapshot.buffer_snapshot);
2218 let align_to = block_start.to_display_point(snapshot);
2219 let anchor_x = text_x
2220 + if rows.contains(&align_to.row()) {
2221 line_layouts[align_to.row().minus(rows.start) as usize]
2222 .x_for_index(align_to.column() as usize)
2223 } else {
2224 layout_line(
2225 align_to.row(),
2226 snapshot,
2227 &self.style,
2228 editor_width,
2229 is_row_soft_wrapped,
2230 cx,
2231 )
2232 .x_for_index(align_to.column() as usize)
2233 };
2234
2235 let selected = selections
2236 .binary_search_by(|selection| {
2237 if selection.end <= block_start {
2238 Ordering::Less
2239 } else if selection.start >= block_end {
2240 Ordering::Greater
2241 } else {
2242 Ordering::Equal
2243 }
2244 })
2245 .is_ok();
2246
2247 div()
2248 .size_full()
2249 .child(block.render(&mut BlockContext {
2250 context: cx,
2251 anchor_x,
2252 gutter_dimensions,
2253 line_height,
2254 em_width,
2255 block_id,
2256 selected,
2257 max_width: text_hitbox.size.width.max(*scroll_width),
2258 editor_style: &self.style,
2259 }))
2260 .into_any()
2261 }
2262
2263 Block::FoldedBuffer {
2264 first_excerpt,
2265 prev_excerpt,
2266 show_excerpt_controls,
2267 height,
2268 } => {
2269 let block_start = DisplayPoint::new(block_row_start, 0).to_point(snapshot);
2270 let block_end = DisplayPoint::new(block_row_start + *height, 0).to_point(snapshot);
2271 let selected = selections
2272 .binary_search_by(|selection| {
2273 if selection.end <= block_start {
2274 Ordering::Less
2275 } else if selection.start >= block_end {
2276 Ordering::Greater
2277 } else {
2278 Ordering::Equal
2279 }
2280 })
2281 .is_ok();
2282 let icon_offset = gutter_dimensions.width
2283 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2284
2285 let mut result = v_flex().id(block_id).w_full();
2286 if let Some(prev_excerpt) = prev_excerpt {
2287 if *show_excerpt_controls {
2288 result = result.child(
2289 h_flex()
2290 .w(icon_offset)
2291 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2292 .flex_none()
2293 .justify_end()
2294 .child(self.render_expand_excerpt_button(
2295 prev_excerpt.id,
2296 ExpandExcerptDirection::Down,
2297 IconName::ArrowDownFromLine,
2298 cx,
2299 )),
2300 );
2301 }
2302 }
2303
2304 let jump_data = jump_data(snapshot, block_row_start, *height, first_excerpt, cx);
2305 result
2306 .child(self.render_buffer_header(
2307 first_excerpt,
2308 header_padding,
2309 true,
2310 selected,
2311 jump_data,
2312 cx,
2313 ))
2314 .into_any_element()
2315 }
2316 Block::ExcerptBoundary {
2317 prev_excerpt,
2318 next_excerpt,
2319 show_excerpt_controls,
2320 height,
2321 starts_new_buffer,
2322 } => {
2323 let icon_offset = gutter_dimensions.width
2324 - (gutter_dimensions.left_padding + gutter_dimensions.margin);
2325
2326 let mut result = v_flex().id(block_id).w_full();
2327 if let Some(prev_excerpt) = prev_excerpt {
2328 if *show_excerpt_controls {
2329 result = result.child(
2330 h_flex()
2331 .w(icon_offset)
2332 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2333 .flex_none()
2334 .justify_end()
2335 .child(self.render_expand_excerpt_button(
2336 prev_excerpt.id,
2337 ExpandExcerptDirection::Down,
2338 IconName::ArrowDownFromLine,
2339 cx,
2340 )),
2341 );
2342 }
2343 }
2344
2345 if let Some(next_excerpt) = next_excerpt {
2346 let jump_data = jump_data(snapshot, block_row_start, *height, next_excerpt, cx);
2347 if *starts_new_buffer {
2348 result = result.child(self.render_buffer_header(
2349 next_excerpt,
2350 header_padding,
2351 false,
2352 false,
2353 jump_data,
2354 cx,
2355 ));
2356 if *show_excerpt_controls {
2357 result = result.child(
2358 h_flex()
2359 .w(icon_offset)
2360 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2361 .flex_none()
2362 .justify_end()
2363 .child(self.render_expand_excerpt_button(
2364 next_excerpt.id,
2365 ExpandExcerptDirection::Up,
2366 IconName::ArrowUpFromLine,
2367 cx,
2368 )),
2369 );
2370 }
2371 } else {
2372 let editor = self.editor.clone();
2373 result = result.child(
2374 h_flex()
2375 .id("excerpt header block")
2376 .group("excerpt-jump-action")
2377 .justify_start()
2378 .w_full()
2379 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32 * cx.line_height())
2380 .relative()
2381 .child(
2382 div()
2383 .top(px(0.))
2384 .absolute()
2385 .w_full()
2386 .h_px()
2387 .bg(cx.theme().colors().border_variant)
2388 .group_hover("excerpt-jump-action", |style| {
2389 style.bg(cx.theme().colors().border)
2390 }),
2391 )
2392 .cursor_pointer()
2393 .on_click({
2394 let jump_data = jump_data.clone();
2395 cx.listener_for(&self.editor, {
2396 let jump_data = jump_data.clone();
2397 move |editor, e: &ClickEvent, cx| {
2398 cx.stop_propagation();
2399 editor.open_excerpts_common(
2400 Some(jump_data.clone()),
2401 e.down.modifiers.secondary(),
2402 cx,
2403 );
2404 }
2405 })
2406 })
2407 .tooltip({
2408 let jump_data = jump_data.clone();
2409 move |cx| {
2410 let jump_message = format!(
2411 "Jump to {}:L{}",
2412 match &jump_data.path {
2413 Some(project_path) =>
2414 project_path.path.display().to_string(),
2415 None => {
2416 let editor = editor.read(cx);
2417 editor
2418 .file_at(jump_data.position, cx)
2419 .map(|file| {
2420 file.full_path(cx).display().to_string()
2421 })
2422 .or_else(|| {
2423 Some(
2424 editor
2425 .tab_description(0, cx)?
2426 .to_string(),
2427 )
2428 })
2429 .unwrap_or_else(|| {
2430 "Unknown buffer".to_string()
2431 })
2432 }
2433 },
2434 jump_data.position.row + 1
2435 );
2436 Tooltip::for_action(jump_message, &OpenExcerpts, cx)
2437 }
2438 })
2439 .child(
2440 h_flex()
2441 .w(icon_offset)
2442 .h(MULTI_BUFFER_EXCERPT_HEADER_HEIGHT as f32
2443 * cx.line_height())
2444 .flex_none()
2445 .justify_end()
2446 .child(if *show_excerpt_controls {
2447 self.render_expand_excerpt_button(
2448 next_excerpt.id,
2449 ExpandExcerptDirection::Up,
2450 IconName::ArrowUpFromLine,
2451 cx,
2452 )
2453 } else {
2454 ButtonLike::new("jump-icon")
2455 .style(ButtonStyle::Transparent)
2456 .child(
2457 svg()
2458 .path(IconName::ArrowUpRight.path())
2459 .size(IconSize::XSmall.rems())
2460 .text_color(
2461 cx.theme().colors().border_variant,
2462 )
2463 .group_hover(
2464 "excerpt-jump-action",
2465 |style| {
2466 style.text_color(
2467 cx.theme().colors().border,
2468 )
2469 },
2470 ),
2471 )
2472 }),
2473 ),
2474 );
2475 }
2476 }
2477
2478 result.into_any()
2479 }
2480 };
2481
2482 // Discover the element's content height, then round up to the nearest multiple of line height.
2483 let preliminary_size =
2484 element.layout_as_root(size(available_width, AvailableSpace::MinContent), cx);
2485 let quantized_height = (preliminary_size.height / line_height).ceil() * line_height;
2486 let final_size = if preliminary_size.height == quantized_height {
2487 preliminary_size
2488 } else {
2489 element.layout_as_root(size(available_width, quantized_height.into()), cx)
2490 };
2491
2492 if let BlockId::Custom(custom_block_id) = block_id {
2493 if block.height() > 0 {
2494 let element_height_in_lines =
2495 ((final_size.height / line_height).ceil() as u32).max(1);
2496 if element_height_in_lines != block.height() {
2497 resized_blocks.insert(custom_block_id, element_height_in_lines);
2498 }
2499 }
2500 }
2501
2502 (element, final_size)
2503 }
2504
2505 fn render_buffer_header(
2506 &self,
2507 for_excerpt: &ExcerptInfo,
2508 header_padding: Pixels,
2509 is_folded: bool,
2510 is_selected: bool,
2511 jump_data: JumpData,
2512 cx: &mut WindowContext,
2513 ) -> Div {
2514 let include_root = self
2515 .editor
2516 .read(cx)
2517 .project
2518 .as_ref()
2519 .map(|project| project.read(cx).visible_worktrees(cx).count() > 1)
2520 .unwrap_or_default();
2521 let path = for_excerpt.buffer.resolve_file_path(cx, include_root);
2522 let filename = path
2523 .as_ref()
2524 .and_then(|path| Some(path.file_name()?.to_string_lossy().to_string()));
2525 let parent_path = path
2526 .as_ref()
2527 .and_then(|path| Some(path.parent()?.to_string_lossy().to_string() + "/"));
2528
2529 let focus_handle = self.editor.focus_handle(cx);
2530
2531 div()
2532 .px(header_padding)
2533 .pt(header_padding)
2534 .w_full()
2535 .h(FILE_HEADER_HEIGHT as f32 * cx.line_height())
2536 .child(
2537 h_flex()
2538 .size_full()
2539 .gap_2()
2540 .flex_basis(Length::Definite(DefiniteLength::Fraction(0.667)))
2541 .pl_0p5()
2542 .pr_4()
2543 .rounded_md()
2544 .shadow_md()
2545 .border_1()
2546 .map(|div| {
2547 let border_color = if is_selected {
2548 cx.theme().colors().border_focused
2549 } else {
2550 cx.theme().colors().border
2551 };
2552 div.border_color(border_color)
2553 })
2554 .bg(cx.theme().colors().editor_subheader_background)
2555 .hover(|style| style.bg(cx.theme().colors().element_hover))
2556 .map(|header| {
2557 let editor = self.editor.clone();
2558 let buffer_id = for_excerpt.buffer_id;
2559 let toggle_chevron_icon =
2560 FileIcons::get_chevron_icon(!is_folded, cx).map(Icon::from_path);
2561 header.child(
2562 div()
2563 .hover(|style| style.bg(cx.theme().colors().element_selected))
2564 .rounded_sm()
2565 .child(
2566 ButtonLike::new("toggle-buffer-fold")
2567 .style(ui::ButtonStyle::Transparent)
2568 .size(ButtonSize::Large)
2569 .width(px(30.).into())
2570 .children(toggle_chevron_icon)
2571 .tooltip({
2572 let focus_handle = focus_handle.clone();
2573 move |cx| {
2574 Tooltip::for_action_in(
2575 "Toggle Excerpt Fold",
2576 &ToggleFold,
2577 &focus_handle,
2578 cx,
2579 )
2580 }
2581 })
2582 .on_click(move |_, cx| {
2583 if is_folded {
2584 editor.update(cx, |editor, cx| {
2585 editor.unfold_buffer(buffer_id, cx);
2586 });
2587 } else {
2588 editor.update(cx, |editor, cx| {
2589 editor.fold_buffer(buffer_id, cx);
2590 });
2591 }
2592 }),
2593 ),
2594 )
2595 })
2596 .child(
2597 h_flex()
2598 .id("path header block")
2599 .size_full()
2600 .justify_between()
2601 .child(
2602 h_flex()
2603 .gap_2()
2604 .child(
2605 filename
2606 .map(SharedString::from)
2607 .unwrap_or_else(|| "untitled".into()),
2608 )
2609 .when_some(parent_path, |then, path| {
2610 then.child(
2611 div()
2612 .child(path)
2613 .text_color(cx.theme().colors().text_muted),
2614 )
2615 }),
2616 )
2617 .child(Icon::new(IconName::ArrowUpRight).size(IconSize::Small))
2618 .cursor_pointer()
2619 .tooltip({
2620 let focus_handle = focus_handle.clone();
2621 move |cx| {
2622 Tooltip::for_action_in(
2623 "Jump To File",
2624 &OpenExcerpts,
2625 &focus_handle,
2626 cx,
2627 )
2628 }
2629 })
2630 .on_mouse_down(MouseButton::Left, |_, cx| cx.stop_propagation())
2631 .on_click(cx.listener_for(&self.editor, {
2632 move |editor, e: &ClickEvent, cx| {
2633 editor.open_excerpts_common(
2634 Some(jump_data.clone()),
2635 e.down.modifiers.secondary(),
2636 cx,
2637 );
2638 }
2639 })),
2640 ),
2641 )
2642 }
2643
2644 fn render_expand_excerpt_button(
2645 &self,
2646 excerpt_id: ExcerptId,
2647 direction: ExpandExcerptDirection,
2648 icon: IconName,
2649 cx: &mut WindowContext,
2650 ) -> ButtonLike {
2651 ButtonLike::new("expand-icon")
2652 .style(ButtonStyle::Transparent)
2653 .child(
2654 svg()
2655 .path(icon.path())
2656 .size(IconSize::XSmall.rems())
2657 .text_color(cx.theme().colors().editor_line_number)
2658 .group("")
2659 .hover(|style| style.text_color(cx.theme().colors().editor_active_line_number)),
2660 )
2661 .on_click(cx.listener_for(&self.editor, {
2662 move |editor, _, cx| {
2663 editor.expand_excerpt(excerpt_id, direction, cx);
2664 }
2665 }))
2666 .tooltip({
2667 move |cx| Tooltip::for_action("Expand Excerpt", &ExpandExcerpts { lines: 0 }, cx)
2668 })
2669 }
2670
2671 #[allow(clippy::too_many_arguments)]
2672 fn render_blocks(
2673 &self,
2674 rows: Range<DisplayRow>,
2675 snapshot: &EditorSnapshot,
2676 hitbox: &Hitbox,
2677 text_hitbox: &Hitbox,
2678 editor_width: Pixels,
2679 scroll_width: &mut Pixels,
2680 gutter_dimensions: &GutterDimensions,
2681 em_width: Pixels,
2682 text_x: Pixels,
2683 line_height: Pixels,
2684 line_layouts: &[LineWithInvisibles],
2685 selections: &[Selection<Point>],
2686 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
2687 cx: &mut WindowContext,
2688 ) -> Result<Vec<BlockLayout>, HashMap<CustomBlockId, u32>> {
2689 let (fixed_blocks, non_fixed_blocks) = snapshot
2690 .blocks_in_range(rows.clone())
2691 .partition::<Vec<_>, _>(|(_, block)| block.style() == BlockStyle::Fixed);
2692
2693 let mut focused_block = self
2694 .editor
2695 .update(cx, |editor, _| editor.take_focused_block());
2696 let mut fixed_block_max_width = Pixels::ZERO;
2697 let mut blocks = Vec::new();
2698 let mut resized_blocks = HashMap::default();
2699
2700 for (row, block) in fixed_blocks {
2701 let block_id = block.id();
2702
2703 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2704 focused_block = None;
2705 }
2706
2707 let (element, element_size) = self.render_block(
2708 block,
2709 AvailableSpace::MinContent,
2710 block_id,
2711 row,
2712 snapshot,
2713 text_x,
2714 &rows,
2715 line_layouts,
2716 gutter_dimensions,
2717 line_height,
2718 em_width,
2719 text_hitbox,
2720 editor_width,
2721 scroll_width,
2722 &mut resized_blocks,
2723 selections,
2724 is_row_soft_wrapped,
2725 cx,
2726 );
2727 fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
2728 blocks.push(BlockLayout {
2729 id: block_id,
2730 row: Some(row),
2731 element,
2732 available_space: size(AvailableSpace::MinContent, element_size.height.into()),
2733 style: BlockStyle::Fixed,
2734 });
2735 }
2736 for (row, block) in non_fixed_blocks {
2737 let style = block.style();
2738 let width = match style {
2739 BlockStyle::Sticky => hitbox.size.width,
2740 BlockStyle::Flex => hitbox
2741 .size
2742 .width
2743 .max(fixed_block_max_width)
2744 .max(gutter_dimensions.width + *scroll_width),
2745 BlockStyle::Fixed => unreachable!(),
2746 };
2747 let block_id = block.id();
2748
2749 if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
2750 focused_block = None;
2751 }
2752
2753 let (element, element_size) = self.render_block(
2754 block,
2755 width.into(),
2756 block_id,
2757 row,
2758 snapshot,
2759 text_x,
2760 &rows,
2761 line_layouts,
2762 gutter_dimensions,
2763 line_height,
2764 em_width,
2765 text_hitbox,
2766 editor_width,
2767 scroll_width,
2768 &mut resized_blocks,
2769 selections,
2770 is_row_soft_wrapped,
2771 cx,
2772 );
2773
2774 blocks.push(BlockLayout {
2775 id: block_id,
2776 row: Some(row),
2777 element,
2778 available_space: size(width.into(), element_size.height.into()),
2779 style,
2780 });
2781 }
2782
2783 if let Some(focused_block) = focused_block {
2784 if let Some(focus_handle) = focused_block.focus_handle.upgrade() {
2785 if focus_handle.is_focused(cx) {
2786 if let Some(block) = snapshot.block_for_id(focused_block.id) {
2787 let style = block.style();
2788 let width = match style {
2789 BlockStyle::Fixed => AvailableSpace::MinContent,
2790 BlockStyle::Flex => AvailableSpace::Definite(
2791 hitbox
2792 .size
2793 .width
2794 .max(fixed_block_max_width)
2795 .max(gutter_dimensions.width + *scroll_width),
2796 ),
2797 BlockStyle::Sticky => AvailableSpace::Definite(hitbox.size.width),
2798 };
2799
2800 let (element, element_size) = self.render_block(
2801 &block,
2802 width,
2803 focused_block.id,
2804 rows.end,
2805 snapshot,
2806 text_x,
2807 &rows,
2808 line_layouts,
2809 gutter_dimensions,
2810 line_height,
2811 em_width,
2812 text_hitbox,
2813 editor_width,
2814 scroll_width,
2815 &mut resized_blocks,
2816 selections,
2817 is_row_soft_wrapped,
2818 cx,
2819 );
2820
2821 blocks.push(BlockLayout {
2822 id: block.id(),
2823 row: None,
2824 element,
2825 available_space: size(width, element_size.height.into()),
2826 style,
2827 });
2828 }
2829 }
2830 }
2831 }
2832
2833 if resized_blocks.is_empty() {
2834 *scroll_width = (*scroll_width).max(fixed_block_max_width - gutter_dimensions.width);
2835 Ok(blocks)
2836 } else {
2837 Err(resized_blocks)
2838 }
2839 }
2840
2841 /// Returns true if any of the blocks changed size since the previous frame. This will trigger
2842 /// a restart of rendering for the editor based on the new sizes.
2843 fn layout_blocks(
2844 &self,
2845 blocks: &mut Vec<BlockLayout>,
2846 block_starts: &mut HashSet<DisplayRow>,
2847 hitbox: &Hitbox,
2848 line_height: Pixels,
2849 scroll_pixel_position: gpui::Point<Pixels>,
2850 cx: &mut WindowContext,
2851 ) {
2852 for block in blocks {
2853 let mut origin = if let Some(row) = block.row {
2854 block_starts.insert(row);
2855 hitbox.origin
2856 + point(
2857 Pixels::ZERO,
2858 row.as_f32() * line_height - scroll_pixel_position.y,
2859 )
2860 } else {
2861 // Position the block outside the visible area
2862 hitbox.origin + point(Pixels::ZERO, hitbox.size.height)
2863 };
2864
2865 if !matches!(block.style, BlockStyle::Sticky) {
2866 origin += point(-scroll_pixel_position.x, Pixels::ZERO);
2867 }
2868
2869 let focus_handle = block
2870 .element
2871 .prepaint_as_root(origin, block.available_space, cx);
2872
2873 if let Some(focus_handle) = focus_handle {
2874 self.editor.update(cx, |editor, _cx| {
2875 editor.set_focused_block(FocusedBlock {
2876 id: block.id,
2877 focus_handle: focus_handle.downgrade(),
2878 });
2879 });
2880 }
2881 }
2882 }
2883
2884 #[allow(clippy::too_many_arguments)]
2885 fn layout_context_menu(
2886 &self,
2887 line_height: Pixels,
2888 text_hitbox: &Hitbox,
2889 content_origin: gpui::Point<Pixels>,
2890 start_row: DisplayRow,
2891 scroll_pixel_position: gpui::Point<Pixels>,
2892 line_layouts: &[LineWithInvisibles],
2893 newest_selection_head: DisplayPoint,
2894 gutter_overshoot: Pixels,
2895 cx: &mut WindowContext,
2896 ) {
2897 let Some(context_menu_origin) = self
2898 .editor
2899 .read(cx)
2900 .context_menu_origin(newest_selection_head)
2901 else {
2902 return;
2903 };
2904 let target_position = content_origin
2905 + match context_menu_origin {
2906 crate::ContextMenuOrigin::EditorPoint(display_point) => {
2907 let cursor_row_layout =
2908 &line_layouts[display_point.row().minus(start_row) as usize];
2909 gpui::Point {
2910 x: cmp::max(
2911 px(0.),
2912 cursor_row_layout.x_for_index(display_point.column() as usize)
2913 - scroll_pixel_position.x,
2914 ),
2915 y: cmp::max(
2916 px(0.),
2917 display_point.row().next_row().as_f32() * line_height
2918 - scroll_pixel_position.y,
2919 ),
2920 }
2921 }
2922 crate::ContextMenuOrigin::GutterIndicator(row) => {
2923 // Context menu was spawned via a click on a gutter. Ensure it's a bit closer to the indicator than just a plain first column of the
2924 // text field.
2925 gpui::Point {
2926 x: -gutter_overshoot,
2927 y: row.next_row().as_f32() * line_height - scroll_pixel_position.y,
2928 }
2929 }
2930 };
2931
2932 // If the context menu's max height won't fit below, then flip it above the line and display
2933 // it in reverse order. If the available space above is less than below.
2934 let unconstrained_max_height = line_height * 12. + POPOVER_Y_PADDING;
2935 let min_height = line_height * 3. + POPOVER_Y_PADDING;
2936 let bottom_y_when_flipped = target_position.y - line_height;
2937 let available_above = bottom_y_when_flipped - text_hitbox.top();
2938 let available_below = text_hitbox.bottom() - target_position.y;
2939 let y_overflows_below = unconstrained_max_height > available_below;
2940 let mut y_is_flipped = y_overflows_below && available_above > available_below;
2941 let mut height = cmp::min(
2942 unconstrained_max_height,
2943 if y_is_flipped {
2944 available_above
2945 } else {
2946 available_below
2947 },
2948 );
2949
2950 // If less than 3 lines fit within the text bounds, instead fit within the window.
2951 if height < min_height {
2952 let available_above = bottom_y_when_flipped;
2953 let available_below = cx.viewport_size().height - target_position.y;
2954 if available_below > 3. * line_height {
2955 y_is_flipped = false;
2956 height = min_height;
2957 } else if available_above > 3. * line_height {
2958 y_is_flipped = true;
2959 height = min_height;
2960 } else if available_above > available_below {
2961 y_is_flipped = true;
2962 height = available_above;
2963 } else {
2964 y_is_flipped = false;
2965 height = available_below;
2966 }
2967 }
2968
2969 let max_height_in_lines = ((height - POPOVER_Y_PADDING) / line_height).floor() as u32;
2970
2971 let Some(mut menu_element) = self.editor.update(cx, |editor, cx| {
2972 editor.render_context_menu(&self.style, max_height_in_lines, cx)
2973 }) else {
2974 return;
2975 };
2976
2977 let menu_size = menu_element.layout_as_root(AvailableSpace::min_size(), cx);
2978 let menu_position = gpui::Point {
2979 x: if target_position.x + menu_size.width > cx.viewport_size().width {
2980 // Snap the right edge of the list to the right edge of the window if its horizontal bounds
2981 // overflow.
2982 (cx.viewport_size().width - menu_size.width).max(Pixels::ZERO)
2983 } else {
2984 target_position.x
2985 },
2986 y: if y_is_flipped {
2987 bottom_y_when_flipped - menu_size.height
2988 } else {
2989 target_position.y
2990 },
2991 };
2992 cx.defer_draw(menu_element, menu_position, 1);
2993
2994 let aside_element = self.editor.update(cx, |editor, cx| {
2995 editor.render_context_menu_aside(&self.style, unconstrained_max_height, cx)
2996 });
2997 if let Some(aside_element) = aside_element {
2998 let menu_bounds = Bounds::new(menu_position, menu_size);
2999 let max_menu_size = size(menu_size.width, unconstrained_max_height);
3000 let max_menu_bounds = if y_is_flipped {
3001 Bounds::new(
3002 point(
3003 menu_position.x,
3004 bottom_y_when_flipped - max_menu_size.height,
3005 ),
3006 max_menu_size,
3007 )
3008 } else {
3009 Bounds::new(target_position, max_menu_size)
3010 };
3011
3012 // Pad the target by 4 pixels to create a gap.
3013 let mut extend_amount = Edges::all(px(4.));
3014 // Extend to include the cursored line to avoid overlapping it.
3015 if y_is_flipped {
3016 extend_amount.bottom = line_height;
3017 } else {
3018 extend_amount.top = line_height;
3019 }
3020 self.layout_context_menu_aside(
3021 text_hitbox,
3022 y_is_flipped,
3023 menu_position,
3024 menu_bounds.extend(extend_amount),
3025 max_menu_bounds.extend(extend_amount),
3026 unconstrained_max_height,
3027 aside_element,
3028 cx,
3029 );
3030 }
3031 }
3032
3033 #[allow(clippy::too_many_arguments)]
3034 fn layout_context_menu_aside(
3035 &self,
3036 text_hitbox: &Hitbox,
3037 y_is_flipped: bool,
3038 menu_position: gpui::Point<Pixels>,
3039 target_bounds: Bounds<Pixels>,
3040 max_target_bounds: Bounds<Pixels>,
3041 max_height: Pixels,
3042 aside: AnyElement,
3043 cx: &mut WindowContext,
3044 ) {
3045 let mut aside = aside;
3046 let actual_size = aside.layout_as_root(AvailableSpace::min_size(), cx);
3047
3048 // Snap to right side of window if it would overflow.
3049 let aside_x = cmp::min(
3050 menu_position.x,
3051 cx.viewport_size().width - actual_size.width,
3052 );
3053 if aside_x < px(0.) {
3054 // Not enough space, skip drawing.
3055 return;
3056 }
3057
3058 let top_position = point(aside_x, target_bounds.top() - actual_size.height);
3059 let bottom_position = point(aside_x, target_bounds.bottom());
3060 let right_position = point(target_bounds.right(), menu_position.y);
3061
3062 let fit_horizontally_within = |available: Edges<Pixels>, wanted: Size<Pixels>| {
3063 // Prefer to fit to the right, then on the same side of the line as the menu, then on
3064 // the other side of the line.
3065 if wanted.width < available.right {
3066 Some(right_position)
3067 } else if !y_is_flipped && wanted.height < available.bottom {
3068 Some(bottom_position)
3069 } else if !y_is_flipped && wanted.height < available.top {
3070 Some(top_position)
3071 } else if y_is_flipped && wanted.height < available.top {
3072 Some(top_position)
3073 } else if y_is_flipped && wanted.height < available.bottom {
3074 Some(bottom_position)
3075 } else {
3076 None
3077 }
3078 };
3079
3080 // Prefer choosing a direction using max sizes rather than actual size for stability.
3081 let mut available = max_target_bounds.space_within(&text_hitbox.bounds);
3082 let mut wanted = size(MAX_COMPLETIONS_ASIDE_WIDTH, max_height);
3083 let aside_position = fit_horizontally_within(available, wanted)
3084 .or_else(|| {
3085 // Fallback: fit max size in window.
3086 available = max_target_bounds
3087 .space_within(&Bounds::new(Default::default(), cx.viewport_size()));
3088 fit_horizontally_within(available, wanted)
3089 })
3090 .or_else(|| {
3091 // Fallback: fit actual size in window.
3092 wanted = actual_size;
3093 fit_horizontally_within(available, wanted)
3094 });
3095
3096 // Skip drawing if it doesn't fit anywhere.
3097 if let Some(aside_position) = aside_position {
3098 cx.defer_draw(aside, aside_position, 1);
3099 }
3100 }
3101
3102 #[allow(clippy::too_many_arguments)]
3103 fn layout_inline_completion_popover(
3104 &self,
3105 text_bounds: &Bounds<Pixels>,
3106 editor_snapshot: &EditorSnapshot,
3107 visible_row_range: Range<DisplayRow>,
3108 scroll_top: f32,
3109 scroll_bottom: f32,
3110 line_layouts: &[LineWithInvisibles],
3111 line_height: Pixels,
3112 scroll_pixel_position: gpui::Point<Pixels>,
3113 editor_width: Pixels,
3114 style: &EditorStyle,
3115 cx: &mut WindowContext,
3116 ) -> Option<AnyElement> {
3117 const PADDING_X: Pixels = Pixels(24.);
3118 const PADDING_Y: Pixels = Pixels(2.);
3119
3120 let active_inline_completion = self.editor.read(cx).active_inline_completion.as_ref()?;
3121
3122 match &active_inline_completion.completion {
3123 InlineCompletion::Move(target_position) => {
3124 let tab_kbd = h_flex()
3125 .px_0p5()
3126 .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
3127 .text_size(TextSize::XSmall.rems(cx))
3128 .text_color(cx.theme().colors().text.opacity(0.8))
3129 .child("tab");
3130
3131 let icon_container = div().mt(px(2.5)); // For optical alignment
3132
3133 let container_element = h_flex()
3134 .items_center()
3135 .py_0p5()
3136 .px_1()
3137 .gap_1()
3138 .bg(cx.theme().colors().editor_subheader_background)
3139 .border_1()
3140 .border_color(cx.theme().colors().text_accent.opacity(0.2))
3141 .rounded_md()
3142 .shadow_sm();
3143
3144 let target_display_point = target_position.to_display_point(editor_snapshot);
3145 if target_display_point.row().as_f32() < scroll_top {
3146 let mut element = container_element
3147 .child(tab_kbd)
3148 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3149 .child(
3150 icon_container
3151 .child(Icon::new(IconName::ArrowUp).size(IconSize::Small)),
3152 )
3153 .into_any();
3154 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3155 let offset = point((text_bounds.size.width - size.width) / 2., PADDING_Y);
3156 element.prepaint_at(text_bounds.origin + offset, cx);
3157 Some(element)
3158 } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
3159 let mut element = container_element
3160 .child(tab_kbd)
3161 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3162 .child(
3163 icon_container
3164 .child(Icon::new(IconName::ArrowDown).size(IconSize::Small)),
3165 )
3166 .into_any();
3167 let size = element.layout_as_root(AvailableSpace::min_size(), cx);
3168 let offset = point(
3169 (text_bounds.size.width - size.width) / 2.,
3170 text_bounds.size.height - size.height - PADDING_Y,
3171 );
3172 element.prepaint_at(text_bounds.origin + offset, cx);
3173 Some(element)
3174 } else {
3175 let mut element = container_element
3176 .child(tab_kbd)
3177 .child(Label::new("Jump to Edit").size(LabelSize::Small))
3178 .into_any();
3179
3180 let target_line_end = DisplayPoint::new(
3181 target_display_point.row(),
3182 editor_snapshot.line_len(target_display_point.row()),
3183 );
3184 let origin = self.editor.update(cx, |editor, cx| {
3185 editor.display_to_pixel_point(target_line_end, editor_snapshot, cx)
3186 })?;
3187 element.prepaint_as_root(
3188 text_bounds.origin + origin + point(PADDING_X, px(0.)),
3189 AvailableSpace::min_size(),
3190 cx,
3191 );
3192 Some(element)
3193 }
3194 }
3195 InlineCompletion::Edit(edits) => {
3196 if self.editor.read(cx).has_active_completions_menu() {
3197 return None;
3198 }
3199
3200 let edit_start = edits
3201 .first()
3202 .unwrap()
3203 .0
3204 .start
3205 .to_display_point(editor_snapshot);
3206 let edit_end = edits
3207 .last()
3208 .unwrap()
3209 .0
3210 .end
3211 .to_display_point(editor_snapshot);
3212
3213 let is_visible = visible_row_range.contains(&edit_start.row())
3214 || visible_row_range.contains(&edit_end.row());
3215 if !is_visible {
3216 return None;
3217 }
3218
3219 if all_edits_insertions_or_deletions(edits, &editor_snapshot.buffer_snapshot) {
3220 return None;
3221 }
3222
3223 let crate::InlineCompletionText::Edit { text, highlights } =
3224 crate::inline_completion_edit_text(editor_snapshot, edits, false, cx)
3225 else {
3226 return None;
3227 };
3228 let line_count = text.lines().count() + 1;
3229
3230 let longest_row =
3231 editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
3232 let longest_line_width = if visible_row_range.contains(&longest_row) {
3233 line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
3234 } else {
3235 layout_line(
3236 longest_row,
3237 editor_snapshot,
3238 style,
3239 editor_width,
3240 |_| false,
3241 cx,
3242 )
3243 .width
3244 };
3245
3246 let styled_text =
3247 gpui::StyledText::new(text.clone()).with_highlights(&style.text, highlights);
3248
3249 let mut element = div()
3250 .bg(cx.theme().colors().editor_background)
3251 .border_1()
3252 .border_color(cx.theme().colors().border)
3253 .rounded_md()
3254 .px_1()
3255 .child(styled_text)
3256 .into_any();
3257
3258 let element_bounds = element.layout_as_root(AvailableSpace::min_size(), cx);
3259 let is_fully_visible =
3260 editor_width >= longest_line_width + PADDING_X + element_bounds.width;
3261
3262 let origin = if is_fully_visible {
3263 text_bounds.origin
3264 + point(
3265 longest_line_width + PADDING_X - scroll_pixel_position.x,
3266 edit_start.row().as_f32() * line_height - scroll_pixel_position.y,
3267 )
3268 } else {
3269 let target_above =
3270 DisplayRow(edit_start.row().0.saturating_sub(line_count as u32));
3271 let row_target = if visible_row_range
3272 .contains(&DisplayRow(target_above.0.saturating_sub(1)))
3273 {
3274 target_above
3275 } else {
3276 DisplayRow(edit_end.row().0 + 1)
3277 };
3278
3279 text_bounds.origin
3280 + point(
3281 -scroll_pixel_position.x,
3282 row_target.as_f32() * line_height - scroll_pixel_position.y,
3283 )
3284 };
3285
3286 element.prepaint_as_root(origin, element_bounds.into(), cx);
3287 Some(element)
3288 }
3289 }
3290 }
3291
3292 fn layout_mouse_context_menu(
3293 &self,
3294 editor_snapshot: &EditorSnapshot,
3295 visible_range: Range<DisplayRow>,
3296 content_origin: gpui::Point<Pixels>,
3297 cx: &mut WindowContext,
3298 ) -> Option<AnyElement> {
3299 let position = self.editor.update(cx, |editor, cx| {
3300 let visible_start_point = editor.display_to_pixel_point(
3301 DisplayPoint::new(visible_range.start, 0),
3302 editor_snapshot,
3303 cx,
3304 )?;
3305 let visible_end_point = editor.display_to_pixel_point(
3306 DisplayPoint::new(visible_range.end, 0),
3307 editor_snapshot,
3308 cx,
3309 )?;
3310
3311 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3312 let (source_display_point, position) = match mouse_context_menu.position {
3313 MenuPosition::PinnedToScreen(point) => (None, point),
3314 MenuPosition::PinnedToEditor { source, offset } => {
3315 let source_display_point = source.to_display_point(editor_snapshot);
3316 let source_point = editor.to_pixel_point(source, editor_snapshot, cx)?;
3317 let position = content_origin + source_point + offset;
3318 (Some(source_display_point), position)
3319 }
3320 };
3321
3322 let source_included = source_display_point.map_or(true, |source_display_point| {
3323 visible_range
3324 .to_inclusive()
3325 .contains(&source_display_point.row())
3326 });
3327 let position_included =
3328 visible_start_point.y <= position.y && position.y <= visible_end_point.y;
3329 if !source_included && !position_included {
3330 None
3331 } else {
3332 Some(position)
3333 }
3334 })?;
3335
3336 let mut element = self.editor.update(cx, |editor, _| {
3337 let mouse_context_menu = editor.mouse_context_menu.as_ref()?;
3338 let context_menu = mouse_context_menu.context_menu.clone();
3339
3340 Some(
3341 deferred(
3342 anchored()
3343 .position(position)
3344 .child(context_menu)
3345 .anchor(Corner::TopLeft)
3346 .snap_to_window_with_margin(px(8.)),
3347 )
3348 .with_priority(1)
3349 .into_any(),
3350 )
3351 })?;
3352
3353 element.prepaint_as_root(position, AvailableSpace::min_size(), cx);
3354 Some(element)
3355 }
3356
3357 #[allow(clippy::too_many_arguments)]
3358 fn layout_hover_popovers(
3359 &self,
3360 snapshot: &EditorSnapshot,
3361 hitbox: &Hitbox,
3362 text_hitbox: &Hitbox,
3363 visible_display_row_range: Range<DisplayRow>,
3364 content_origin: gpui::Point<Pixels>,
3365 scroll_pixel_position: gpui::Point<Pixels>,
3366 line_layouts: &[LineWithInvisibles],
3367 line_height: Pixels,
3368 em_width: Pixels,
3369 cx: &mut WindowContext,
3370 ) {
3371 struct MeasuredHoverPopover {
3372 element: AnyElement,
3373 size: Size<Pixels>,
3374 horizontal_offset: Pixels,
3375 }
3376
3377 let max_size = size(
3378 (120. * em_width) // Default size
3379 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3380 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3381 (16. * line_height) // Default size
3382 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3383 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3384 );
3385
3386 let hover_popovers = self.editor.update(cx, |editor, cx| {
3387 editor
3388 .hover_state
3389 .render(snapshot, visible_display_row_range.clone(), max_size, cx)
3390 });
3391 let Some((position, hover_popovers)) = hover_popovers else {
3392 return;
3393 };
3394
3395 // This is safe because we check on layout whether the required row is available
3396 let hovered_row_layout =
3397 &line_layouts[position.row().minus(visible_display_row_range.start) as usize];
3398
3399 // Compute Hovered Point
3400 let x =
3401 hovered_row_layout.x_for_index(position.column() as usize) - scroll_pixel_position.x;
3402 let y = position.row().as_f32() * line_height - scroll_pixel_position.y;
3403 let hovered_point = content_origin + point(x, y);
3404
3405 let mut overall_height = Pixels::ZERO;
3406 let mut measured_hover_popovers = Vec::new();
3407 for mut hover_popover in hover_popovers {
3408 let size = hover_popover.layout_as_root(AvailableSpace::min_size(), cx);
3409 let horizontal_offset =
3410 (text_hitbox.top_right().x - (hovered_point.x + size.width)).min(Pixels::ZERO);
3411
3412 overall_height += HOVER_POPOVER_GAP + size.height;
3413
3414 measured_hover_popovers.push(MeasuredHoverPopover {
3415 element: hover_popover,
3416 size,
3417 horizontal_offset,
3418 });
3419 }
3420 overall_height += HOVER_POPOVER_GAP;
3421
3422 fn draw_occluder(width: Pixels, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
3423 let mut occlusion = div()
3424 .size_full()
3425 .occlude()
3426 .on_mouse_move(|_, cx| cx.stop_propagation())
3427 .into_any_element();
3428 occlusion.layout_as_root(size(width, HOVER_POPOVER_GAP).into(), cx);
3429 cx.defer_draw(occlusion, origin, 2);
3430 }
3431
3432 if hovered_point.y > overall_height {
3433 // There is enough space above. Render popovers above the hovered point
3434 let mut current_y = hovered_point.y;
3435 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3436 let size = popover.size;
3437 let popover_origin = point(
3438 hovered_point.x + popover.horizontal_offset,
3439 current_y - size.height,
3440 );
3441
3442 cx.defer_draw(popover.element, popover_origin, 2);
3443 if position != itertools::Position::Last {
3444 let origin = point(popover_origin.x, popover_origin.y - HOVER_POPOVER_GAP);
3445 draw_occluder(size.width, origin, cx);
3446 }
3447
3448 current_y = popover_origin.y - HOVER_POPOVER_GAP;
3449 }
3450 } else {
3451 // There is not enough space above. Render popovers below the hovered point
3452 let mut current_y = hovered_point.y + line_height;
3453 for (position, popover) in measured_hover_popovers.into_iter().with_position() {
3454 let size = popover.size;
3455 let popover_origin = point(hovered_point.x + popover.horizontal_offset, current_y);
3456
3457 cx.defer_draw(popover.element, popover_origin, 2);
3458 if position != itertools::Position::Last {
3459 let origin = point(popover_origin.x, popover_origin.y + size.height);
3460 draw_occluder(size.width, origin, cx);
3461 }
3462
3463 current_y = popover_origin.y + size.height + HOVER_POPOVER_GAP;
3464 }
3465 }
3466 }
3467
3468 #[allow(clippy::too_many_arguments)]
3469 fn layout_signature_help(
3470 &self,
3471 hitbox: &Hitbox,
3472 content_origin: gpui::Point<Pixels>,
3473 scroll_pixel_position: gpui::Point<Pixels>,
3474 newest_selection_head: Option<DisplayPoint>,
3475 start_row: DisplayRow,
3476 line_layouts: &[LineWithInvisibles],
3477 line_height: Pixels,
3478 em_width: Pixels,
3479 cx: &mut WindowContext,
3480 ) {
3481 if !self.editor.focus_handle(cx).is_focused(cx) {
3482 return;
3483 }
3484 let Some(newest_selection_head) = newest_selection_head else {
3485 return;
3486 };
3487 let selection_row = newest_selection_head.row();
3488 if selection_row < start_row {
3489 return;
3490 }
3491 let Some(cursor_row_layout) = line_layouts.get(selection_row.minus(start_row) as usize)
3492 else {
3493 return;
3494 };
3495
3496 let start_x = cursor_row_layout.x_for_index(newest_selection_head.column() as usize)
3497 - scroll_pixel_position.x
3498 + content_origin.x;
3499 let start_y =
3500 selection_row.as_f32() * line_height + content_origin.y - scroll_pixel_position.y;
3501
3502 let max_size = size(
3503 (120. * em_width) // Default size
3504 .min(hitbox.size.width / 2.) // Shrink to half of the editor width
3505 .max(MIN_POPOVER_CHARACTER_WIDTH * em_width), // Apply minimum width of 20 characters
3506 (16. * line_height) // Default size
3507 .min(hitbox.size.height / 2.) // Shrink to half of the editor height
3508 .max(MIN_POPOVER_LINE_HEIGHT * line_height), // Apply minimum height of 4 lines
3509 );
3510
3511 let maybe_element = self.editor.update(cx, |editor, cx| {
3512 if let Some(popover) = editor.signature_help_state.popover_mut() {
3513 let element = popover.render(
3514 &self.style,
3515 max_size,
3516 editor.workspace.as_ref().map(|(w, _)| w.clone()),
3517 cx,
3518 );
3519 Some(element)
3520 } else {
3521 None
3522 }
3523 });
3524 if let Some(mut element) = maybe_element {
3525 let window_size = cx.viewport_size();
3526 let size = element.layout_as_root(Size::<AvailableSpace>::default(), cx);
3527 let mut point = point(start_x, start_y - size.height);
3528
3529 // Adjusting to ensure the popover does not overflow in the X-axis direction.
3530 if point.x + size.width >= window_size.width {
3531 point.x = window_size.width - size.width;
3532 }
3533
3534 cx.defer_draw(element, point, 1)
3535 }
3536 }
3537
3538 fn paint_background(&self, layout: &EditorLayout, cx: &mut WindowContext) {
3539 cx.paint_layer(layout.hitbox.bounds, |cx| {
3540 let scroll_top = layout.position_map.snapshot.scroll_position().y;
3541 let gutter_bg = cx.theme().colors().editor_gutter_background;
3542 cx.paint_quad(fill(layout.gutter_hitbox.bounds, gutter_bg));
3543 cx.paint_quad(fill(layout.text_hitbox.bounds, self.style.background));
3544
3545 if let EditorMode::Full = layout.mode {
3546 let mut active_rows = layout.active_rows.iter().peekable();
3547 while let Some((start_row, contains_non_empty_selection)) = active_rows.next() {
3548 let mut end_row = start_row.0;
3549 while active_rows
3550 .peek()
3551 .map_or(false, |(active_row, has_selection)| {
3552 active_row.0 == end_row + 1
3553 && *has_selection == contains_non_empty_selection
3554 })
3555 {
3556 active_rows.next().unwrap();
3557 end_row += 1;
3558 }
3559
3560 if !contains_non_empty_selection {
3561 let highlight_h_range =
3562 match layout.position_map.snapshot.current_line_highlight {
3563 CurrentLineHighlight::Gutter => Some(Range {
3564 start: layout.hitbox.left(),
3565 end: layout.gutter_hitbox.right(),
3566 }),
3567 CurrentLineHighlight::Line => Some(Range {
3568 start: layout.text_hitbox.bounds.left(),
3569 end: layout.text_hitbox.bounds.right(),
3570 }),
3571 CurrentLineHighlight::All => Some(Range {
3572 start: layout.hitbox.left(),
3573 end: layout.hitbox.right(),
3574 }),
3575 CurrentLineHighlight::None => None,
3576 };
3577 if let Some(range) = highlight_h_range {
3578 let active_line_bg = cx.theme().colors().editor_active_line_background;
3579 let bounds = Bounds {
3580 origin: point(
3581 range.start,
3582 layout.hitbox.origin.y
3583 + (start_row.as_f32() - scroll_top)
3584 * layout.position_map.line_height,
3585 ),
3586 size: size(
3587 range.end - range.start,
3588 layout.position_map.line_height
3589 * (end_row - start_row.0 + 1) as f32,
3590 ),
3591 };
3592 cx.paint_quad(fill(bounds, active_line_bg));
3593 }
3594 }
3595 }
3596
3597 let mut paint_highlight =
3598 |highlight_row_start: DisplayRow, highlight_row_end: DisplayRow, color| {
3599 let origin = point(
3600 layout.hitbox.origin.x,
3601 layout.hitbox.origin.y
3602 + (highlight_row_start.as_f32() - scroll_top)
3603 * layout.position_map.line_height,
3604 );
3605 let size = size(
3606 layout.hitbox.size.width,
3607 layout.position_map.line_height
3608 * highlight_row_end.next_row().minus(highlight_row_start) as f32,
3609 );
3610 cx.paint_quad(fill(Bounds { origin, size }, color));
3611 };
3612
3613 let mut current_paint: Option<(Hsla, Range<DisplayRow>)> = None;
3614 for (&new_row, &new_color) in &layout.highlighted_rows {
3615 match &mut current_paint {
3616 Some((current_color, current_range)) => {
3617 let current_color = *current_color;
3618 let new_range_started = current_color != new_color
3619 || current_range.end.next_row() != new_row;
3620 if new_range_started {
3621 paint_highlight(
3622 current_range.start,
3623 current_range.end,
3624 current_color,
3625 );
3626 current_paint = Some((new_color, new_row..new_row));
3627 continue;
3628 } else {
3629 current_range.end = current_range.end.next_row();
3630 }
3631 }
3632 None => current_paint = Some((new_color, new_row..new_row)),
3633 };
3634 }
3635 if let Some((color, range)) = current_paint {
3636 paint_highlight(range.start, range.end, color);
3637 }
3638
3639 let scroll_left =
3640 layout.position_map.snapshot.scroll_position().x * layout.position_map.em_width;
3641
3642 for (wrap_position, active) in layout.wrap_guides.iter() {
3643 let x = (layout.text_hitbox.origin.x
3644 + *wrap_position
3645 + layout.position_map.em_width / 2.)
3646 - scroll_left;
3647
3648 let show_scrollbars = {
3649 let (scrollbar_x, scrollbar_y) = &layout.scrollbars_layout.as_xy();
3650
3651 scrollbar_x.as_ref().map_or(false, |sx| sx.visible)
3652 || scrollbar_y.as_ref().map_or(false, |sy| sy.visible)
3653 };
3654
3655 if x < layout.text_hitbox.origin.x
3656 || (show_scrollbars && x > self.scrollbar_left(&layout.hitbox.bounds))
3657 {
3658 continue;
3659 }
3660
3661 let color = if *active {
3662 cx.theme().colors().editor_active_wrap_guide
3663 } else {
3664 cx.theme().colors().editor_wrap_guide
3665 };
3666 cx.paint_quad(fill(
3667 Bounds {
3668 origin: point(x, layout.text_hitbox.origin.y),
3669 size: size(px(1.), layout.text_hitbox.size.height),
3670 },
3671 color,
3672 ));
3673 }
3674 }
3675 })
3676 }
3677
3678 fn paint_indent_guides(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3679 let Some(indent_guides) = &layout.indent_guides else {
3680 return;
3681 };
3682
3683 let faded_color = |color: Hsla, alpha: f32| {
3684 let mut faded = color;
3685 faded.a = alpha;
3686 faded
3687 };
3688
3689 for indent_guide in indent_guides {
3690 let indent_accent_colors = cx.theme().accents().color_for_index(indent_guide.depth);
3691 let settings = indent_guide.settings;
3692
3693 // TODO fixed for now, expose them through themes later
3694 const INDENT_AWARE_ALPHA: f32 = 0.2;
3695 const INDENT_AWARE_ACTIVE_ALPHA: f32 = 0.4;
3696 const INDENT_AWARE_BACKGROUND_ALPHA: f32 = 0.1;
3697 const INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA: f32 = 0.2;
3698
3699 let line_color = match (settings.coloring, indent_guide.active) {
3700 (IndentGuideColoring::Disabled, _) => None,
3701 (IndentGuideColoring::Fixed, false) => {
3702 Some(cx.theme().colors().editor_indent_guide)
3703 }
3704 (IndentGuideColoring::Fixed, true) => {
3705 Some(cx.theme().colors().editor_indent_guide_active)
3706 }
3707 (IndentGuideColoring::IndentAware, false) => {
3708 Some(faded_color(indent_accent_colors, INDENT_AWARE_ALPHA))
3709 }
3710 (IndentGuideColoring::IndentAware, true) => {
3711 Some(faded_color(indent_accent_colors, INDENT_AWARE_ACTIVE_ALPHA))
3712 }
3713 };
3714
3715 let background_color = match (settings.background_coloring, indent_guide.active) {
3716 (IndentGuideBackgroundColoring::Disabled, _) => None,
3717 (IndentGuideBackgroundColoring::IndentAware, false) => Some(faded_color(
3718 indent_accent_colors,
3719 INDENT_AWARE_BACKGROUND_ALPHA,
3720 )),
3721 (IndentGuideBackgroundColoring::IndentAware, true) => Some(faded_color(
3722 indent_accent_colors,
3723 INDENT_AWARE_BACKGROUND_ACTIVE_ALPHA,
3724 )),
3725 };
3726
3727 let requested_line_width = if indent_guide.active {
3728 settings.active_line_width
3729 } else {
3730 settings.line_width
3731 }
3732 .clamp(1, 10);
3733 let mut line_indicator_width = 0.;
3734 if let Some(color) = line_color {
3735 cx.paint_quad(fill(
3736 Bounds {
3737 origin: indent_guide.origin,
3738 size: size(px(requested_line_width as f32), indent_guide.length),
3739 },
3740 color,
3741 ));
3742 line_indicator_width = requested_line_width as f32;
3743 }
3744
3745 if let Some(color) = background_color {
3746 let width = indent_guide.single_indent_width - px(line_indicator_width);
3747 cx.paint_quad(fill(
3748 Bounds {
3749 origin: point(
3750 indent_guide.origin.x + px(line_indicator_width),
3751 indent_guide.origin.y,
3752 ),
3753 size: size(width, indent_guide.length),
3754 },
3755 color,
3756 ));
3757 }
3758 }
3759 }
3760
3761 fn paint_line_numbers(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3762 let line_height = layout.position_map.line_height;
3763 let scroll_position = layout.position_map.snapshot.scroll_position();
3764 let scroll_top = scroll_position.y * line_height;
3765
3766 cx.set_cursor_style(CursorStyle::Arrow, &layout.gutter_hitbox);
3767
3768 for (ix, line) in layout.line_numbers.iter().enumerate() {
3769 if let Some(line) = line {
3770 let line_origin = layout.gutter_hitbox.origin
3771 + point(
3772 layout.gutter_hitbox.size.width
3773 - line.width
3774 - layout.gutter_dimensions.right_padding,
3775 ix as f32 * line_height - (scroll_top % line_height),
3776 );
3777
3778 line.paint(line_origin, line_height, cx).log_err();
3779 }
3780 }
3781 }
3782
3783 fn paint_diff_hunks(layout: &mut EditorLayout, cx: &mut WindowContext) {
3784 if layout.display_hunks.is_empty() {
3785 return;
3786 }
3787
3788 let line_height = layout.position_map.line_height;
3789 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3790 for (hunk, hitbox) in &layout.display_hunks {
3791 let hunk_to_paint = match hunk {
3792 DisplayDiffHunk::Folded { .. } => {
3793 let hunk_bounds = Self::diff_hunk_bounds(
3794 &layout.position_map.snapshot,
3795 line_height,
3796 layout.gutter_hitbox.bounds,
3797 hunk,
3798 );
3799 Some((
3800 hunk_bounds,
3801 cx.theme().status().modified,
3802 Corners::all(px(0.)),
3803 ))
3804 }
3805 DisplayDiffHunk::Unfolded { status, .. } => {
3806 hitbox.as_ref().map(|hunk_hitbox| match status {
3807 DiffHunkStatus::Added => (
3808 hunk_hitbox.bounds,
3809 cx.theme().status().created,
3810 Corners::all(px(0.)),
3811 ),
3812 DiffHunkStatus::Modified => (
3813 hunk_hitbox.bounds,
3814 cx.theme().status().modified,
3815 Corners::all(px(0.)),
3816 ),
3817 DiffHunkStatus::Removed => (
3818 Bounds::new(
3819 point(
3820 hunk_hitbox.origin.x - hunk_hitbox.size.width,
3821 hunk_hitbox.origin.y,
3822 ),
3823 size(hunk_hitbox.size.width * px(2.), hunk_hitbox.size.height),
3824 ),
3825 cx.theme().status().deleted,
3826 Corners::all(1. * line_height),
3827 ),
3828 })
3829 }
3830 };
3831
3832 if let Some((hunk_bounds, background_color, corner_radii)) = hunk_to_paint {
3833 cx.paint_quad(quad(
3834 hunk_bounds,
3835 corner_radii,
3836 background_color,
3837 Edges::default(),
3838 transparent_black(),
3839 ));
3840 }
3841 }
3842 });
3843 }
3844
3845 pub(super) fn diff_hunk_bounds(
3846 snapshot: &EditorSnapshot,
3847 line_height: Pixels,
3848 gutter_bounds: Bounds<Pixels>,
3849 hunk: &DisplayDiffHunk,
3850 ) -> Bounds<Pixels> {
3851 let scroll_position = snapshot.scroll_position();
3852 let scroll_top = scroll_position.y * line_height;
3853
3854 match hunk {
3855 DisplayDiffHunk::Folded { display_row, .. } => {
3856 let start_y = display_row.as_f32() * line_height - scroll_top;
3857 let end_y = start_y + line_height;
3858
3859 let width = Self::diff_hunk_strip_width(line_height);
3860 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3861 let highlight_size = size(width, end_y - start_y);
3862 Bounds::new(highlight_origin, highlight_size)
3863 }
3864 DisplayDiffHunk::Unfolded {
3865 display_row_range,
3866 status,
3867 ..
3868 } => match status {
3869 DiffHunkStatus::Added | DiffHunkStatus::Modified => {
3870 let start_row = display_row_range.start;
3871 let end_row = display_row_range.end;
3872 // If we're in a multibuffer, row range span might include an
3873 // excerpt header, so if we were to draw the marker straight away,
3874 // the hunk might include the rows of that header.
3875 // Making the range inclusive doesn't quite cut it, as we rely on the exclusivity for the soft wrap.
3876 // Instead, we simply check whether the range we're dealing with includes
3877 // any excerpt headers and if so, we stop painting the diff hunk on the first row of that header.
3878 let end_row_in_current_excerpt = snapshot
3879 .blocks_in_range(start_row..end_row)
3880 .find_map(|(start_row, block)| {
3881 if matches!(block, Block::ExcerptBoundary { .. }) {
3882 Some(start_row)
3883 } else {
3884 None
3885 }
3886 })
3887 .unwrap_or(end_row);
3888
3889 let start_y = start_row.as_f32() * line_height - scroll_top;
3890 let end_y = end_row_in_current_excerpt.as_f32() * line_height - scroll_top;
3891
3892 let width = Self::diff_hunk_strip_width(line_height);
3893 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3894 let highlight_size = size(width, end_y - start_y);
3895 Bounds::new(highlight_origin, highlight_size)
3896 }
3897 DiffHunkStatus::Removed => {
3898 let row = display_row_range.start;
3899
3900 let offset = line_height / 2.;
3901 let start_y = row.as_f32() * line_height - offset - scroll_top;
3902 let end_y = start_y + line_height;
3903
3904 let width = (0.35 * line_height).floor();
3905 let highlight_origin = gutter_bounds.origin + point(px(0.), start_y);
3906 let highlight_size = size(width, end_y - start_y);
3907 Bounds::new(highlight_origin, highlight_size)
3908 }
3909 },
3910 }
3911 }
3912
3913 /// Returns the width of the diff strip that will be displayed in the gutter.
3914 pub(super) fn diff_hunk_strip_width(line_height: Pixels) -> Pixels {
3915 // We floor the value to prevent pixel rounding.
3916 (0.275 * line_height).floor()
3917 }
3918
3919 fn paint_gutter_indicators(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3920 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3921 cx.with_element_namespace("crease_toggles", |cx| {
3922 for crease_toggle in layout.crease_toggles.iter_mut().flatten() {
3923 crease_toggle.paint(cx);
3924 }
3925 });
3926
3927 for test_indicator in layout.test_indicators.iter_mut() {
3928 test_indicator.paint(cx);
3929 }
3930
3931 if let Some(indicator) = layout.code_actions_indicator.as_mut() {
3932 indicator.paint(cx);
3933 }
3934 });
3935 }
3936
3937 fn paint_gutter_highlights(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3938 for (_, hunk_hitbox) in &layout.display_hunks {
3939 if let Some(hunk_hitbox) = hunk_hitbox {
3940 cx.set_cursor_style(CursorStyle::PointingHand, hunk_hitbox);
3941 }
3942 }
3943
3944 let show_git_gutter = layout
3945 .position_map
3946 .snapshot
3947 .show_git_diff_gutter
3948 .unwrap_or_else(|| {
3949 matches!(
3950 ProjectSettings::get_global(cx).git.git_gutter,
3951 Some(GitGutterSetting::TrackedFiles)
3952 )
3953 });
3954 if show_git_gutter {
3955 Self::paint_diff_hunks(layout, cx)
3956 }
3957
3958 let highlight_width = 0.275 * layout.position_map.line_height;
3959 let highlight_corner_radii = Corners::all(0.05 * layout.position_map.line_height);
3960 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3961 for (range, color) in &layout.highlighted_gutter_ranges {
3962 let start_row = if range.start.row() < layout.visible_display_row_range.start {
3963 layout.visible_display_row_range.start - DisplayRow(1)
3964 } else {
3965 range.start.row()
3966 };
3967 let end_row = if range.end.row() > layout.visible_display_row_range.end {
3968 layout.visible_display_row_range.end + DisplayRow(1)
3969 } else {
3970 range.end.row()
3971 };
3972
3973 let start_y = layout.gutter_hitbox.top()
3974 + start_row.0 as f32 * layout.position_map.line_height
3975 - layout.position_map.scroll_pixel_position.y;
3976 let end_y = layout.gutter_hitbox.top()
3977 + (end_row.0 + 1) as f32 * layout.position_map.line_height
3978 - layout.position_map.scroll_pixel_position.y;
3979 let bounds = Bounds::from_corners(
3980 point(layout.gutter_hitbox.left(), start_y),
3981 point(layout.gutter_hitbox.left() + highlight_width, end_y),
3982 );
3983 cx.paint_quad(fill(bounds, *color).corner_radii(highlight_corner_radii));
3984 }
3985 });
3986 }
3987
3988 fn paint_blamed_display_rows(&self, layout: &mut EditorLayout, cx: &mut WindowContext) {
3989 let Some(blamed_display_rows) = layout.blamed_display_rows.take() else {
3990 return;
3991 };
3992
3993 cx.paint_layer(layout.gutter_hitbox.bounds, |cx| {
3994 for mut blame_element in blamed_display_rows.into_iter() {
3995 blame_element.paint(cx);
3996 }
3997 })
3998 }
3999
4000 fn paint_text(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4001 cx.with_content_mask(
4002 Some(ContentMask {
4003 bounds: layout.text_hitbox.bounds,
4004 }),
4005 |cx| {
4006 let cursor_style = if self
4007 .editor
4008 .read(cx)
4009 .hovered_link_state
4010 .as_ref()
4011 .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
4012 {
4013 CursorStyle::PointingHand
4014 } else {
4015 CursorStyle::IBeam
4016 };
4017 cx.set_cursor_style(cursor_style, &layout.text_hitbox);
4018
4019 let invisible_display_ranges = self.paint_highlights(layout, cx);
4020 self.paint_lines(&invisible_display_ranges, layout, cx);
4021 self.paint_redactions(layout, cx);
4022 self.paint_cursors(layout, cx);
4023 self.paint_inline_blame(layout, cx);
4024 cx.with_element_namespace("crease_trailers", |cx| {
4025 for trailer in layout.crease_trailers.iter_mut().flatten() {
4026 trailer.element.paint(cx);
4027 }
4028 });
4029 },
4030 )
4031 }
4032
4033 fn paint_highlights(
4034 &mut self,
4035 layout: &mut EditorLayout,
4036 cx: &mut WindowContext,
4037 ) -> SmallVec<[Range<DisplayPoint>; 32]> {
4038 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4039 let mut invisible_display_ranges = SmallVec::<[Range<DisplayPoint>; 32]>::new();
4040 let line_end_overshoot = 0.15 * layout.position_map.line_height;
4041 for (range, color) in &layout.highlighted_ranges {
4042 self.paint_highlighted_range(
4043 range.clone(),
4044 *color,
4045 Pixels::ZERO,
4046 line_end_overshoot,
4047 layout,
4048 cx,
4049 );
4050 }
4051
4052 let corner_radius = 0.15 * layout.position_map.line_height;
4053
4054 for (player_color, selections) in &layout.selections {
4055 for selection in selections.iter() {
4056 self.paint_highlighted_range(
4057 selection.range.clone(),
4058 player_color.selection,
4059 corner_radius,
4060 corner_radius * 2.,
4061 layout,
4062 cx,
4063 );
4064
4065 if selection.is_local && !selection.range.is_empty() {
4066 invisible_display_ranges.push(selection.range.clone());
4067 }
4068 }
4069 }
4070 invisible_display_ranges
4071 })
4072 }
4073
4074 fn paint_lines(
4075 &mut self,
4076 invisible_display_ranges: &[Range<DisplayPoint>],
4077 layout: &mut EditorLayout,
4078 cx: &mut WindowContext,
4079 ) {
4080 let whitespace_setting = self
4081 .editor
4082 .read(cx)
4083 .buffer
4084 .read(cx)
4085 .settings_at(0, cx)
4086 .show_whitespaces;
4087
4088 for (ix, line_with_invisibles) in layout.position_map.line_layouts.iter().enumerate() {
4089 let row = DisplayRow(layout.visible_display_row_range.start.0 + ix as u32);
4090 line_with_invisibles.draw(
4091 layout,
4092 row,
4093 layout.content_origin,
4094 whitespace_setting,
4095 invisible_display_ranges,
4096 cx,
4097 )
4098 }
4099
4100 for line_element in &mut layout.line_elements {
4101 line_element.paint(cx);
4102 }
4103 }
4104
4105 fn paint_redactions(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4106 if layout.redacted_ranges.is_empty() {
4107 return;
4108 }
4109
4110 let line_end_overshoot = layout.line_end_overshoot();
4111
4112 // A softer than perfect black
4113 let redaction_color = gpui::rgb(0x0e1111);
4114
4115 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4116 for range in layout.redacted_ranges.iter() {
4117 self.paint_highlighted_range(
4118 range.clone(),
4119 redaction_color.into(),
4120 Pixels::ZERO,
4121 line_end_overshoot,
4122 layout,
4123 cx,
4124 );
4125 }
4126 });
4127 }
4128
4129 fn paint_cursors(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4130 for cursor in &mut layout.visible_cursors {
4131 cursor.paint(layout.content_origin, cx);
4132 }
4133 }
4134
4135 fn paint_scrollbars(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4136 let (scrollbar_x, scrollbar_y) = layout.scrollbars_layout.as_xy();
4137
4138 if let Some(scrollbar_layout) = scrollbar_x {
4139 let hitbox = scrollbar_layout.hitbox.clone();
4140 let text_unit_size = scrollbar_layout.text_unit_size;
4141 let visible_range = scrollbar_layout.visible_range.clone();
4142 let thumb_bounds = scrollbar_layout.thumb_bounds();
4143
4144 if scrollbar_layout.visible {
4145 cx.paint_layer(hitbox.bounds, |cx| {
4146 cx.paint_quad(quad(
4147 hitbox.bounds,
4148 Corners::default(),
4149 cx.theme().colors().scrollbar_track_background,
4150 Edges {
4151 top: Pixels::ZERO,
4152 right: Pixels::ZERO,
4153 bottom: Pixels::ZERO,
4154 left: Pixels::ZERO,
4155 },
4156 cx.theme().colors().scrollbar_track_border,
4157 ));
4158
4159 cx.paint_quad(quad(
4160 thumb_bounds,
4161 Corners::default(),
4162 cx.theme().colors().scrollbar_thumb_background,
4163 Edges {
4164 top: Pixels::ZERO,
4165 right: Pixels::ZERO,
4166 bottom: Pixels::ZERO,
4167 left: ScrollbarLayout::BORDER_WIDTH,
4168 },
4169 cx.theme().colors().scrollbar_thumb_border,
4170 ));
4171 })
4172 }
4173
4174 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4175
4176 cx.on_mouse_event({
4177 let editor = self.editor.clone();
4178
4179 // there may be a way to avoid this clone
4180 let hitbox = hitbox.clone();
4181
4182 let mut mouse_position = cx.mouse_position();
4183 move |event: &MouseMoveEvent, phase, cx| {
4184 if phase == DispatchPhase::Capture {
4185 return;
4186 }
4187
4188 editor.update(cx, |editor, cx| {
4189 if event.pressed_button == Some(MouseButton::Left)
4190 && editor
4191 .scroll_manager
4192 .is_dragging_scrollbar(Axis::Horizontal)
4193 {
4194 let x = mouse_position.x;
4195 let new_x = event.position.x;
4196 if (hitbox.left()..hitbox.right()).contains(&x) {
4197 let mut position = editor.scroll_position(cx);
4198
4199 position.x += (new_x - x) / text_unit_size;
4200 if position.x < 0.0 {
4201 position.x = 0.0;
4202 }
4203 editor.set_scroll_position(position, cx);
4204 }
4205
4206 cx.stop_propagation();
4207 } else {
4208 editor.scroll_manager.set_is_dragging_scrollbar(
4209 Axis::Horizontal,
4210 false,
4211 cx,
4212 );
4213
4214 if hitbox.is_hovered(cx) {
4215 editor.scroll_manager.show_scrollbar(cx);
4216 }
4217 }
4218 mouse_position = event.position;
4219 })
4220 }
4221 });
4222
4223 if self
4224 .editor
4225 .read(cx)
4226 .scroll_manager
4227 .is_dragging_scrollbar(Axis::Horizontal)
4228 {
4229 cx.on_mouse_event({
4230 let editor = self.editor.clone();
4231 move |_: &MouseUpEvent, phase, cx| {
4232 if phase == DispatchPhase::Capture {
4233 return;
4234 }
4235
4236 editor.update(cx, |editor, cx| {
4237 editor.scroll_manager.set_is_dragging_scrollbar(
4238 Axis::Horizontal,
4239 false,
4240 cx,
4241 );
4242 cx.stop_propagation();
4243 });
4244 }
4245 });
4246 } else {
4247 cx.on_mouse_event({
4248 let editor = self.editor.clone();
4249
4250 move |event: &MouseDownEvent, phase, cx| {
4251 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4252 return;
4253 }
4254
4255 editor.update(cx, |editor, cx| {
4256 editor.scroll_manager.set_is_dragging_scrollbar(
4257 Axis::Horizontal,
4258 true,
4259 cx,
4260 );
4261
4262 let x = event.position.x;
4263
4264 if x < thumb_bounds.left() || thumb_bounds.right() < x {
4265 let center_row =
4266 ((x - hitbox.left()) / text_unit_size).round() as u32;
4267 let top_row = center_row.saturating_sub(
4268 (visible_range.end - visible_range.start) as u32 / 2,
4269 );
4270
4271 let mut position = editor.scroll_position(cx);
4272 position.x = top_row as f32;
4273
4274 editor.set_scroll_position(position, cx);
4275 } else {
4276 editor.scroll_manager.show_scrollbar(cx);
4277 }
4278
4279 cx.stop_propagation();
4280 });
4281 }
4282 });
4283 }
4284 }
4285
4286 if let Some(scrollbar_layout) = scrollbar_y {
4287 let hitbox = scrollbar_layout.hitbox.clone();
4288 let text_unit_size = scrollbar_layout.text_unit_size;
4289 let visible_range = scrollbar_layout.visible_range.clone();
4290 let thumb_bounds = scrollbar_layout.thumb_bounds();
4291
4292 if scrollbar_layout.visible {
4293 cx.paint_layer(hitbox.bounds, |cx| {
4294 cx.paint_quad(quad(
4295 hitbox.bounds,
4296 Corners::default(),
4297 cx.theme().colors().scrollbar_track_background,
4298 Edges {
4299 top: Pixels::ZERO,
4300 right: Pixels::ZERO,
4301 bottom: Pixels::ZERO,
4302 left: ScrollbarLayout::BORDER_WIDTH,
4303 },
4304 cx.theme().colors().scrollbar_track_border,
4305 ));
4306
4307 let fast_markers =
4308 self.collect_fast_scrollbar_markers(layout, &scrollbar_layout, cx);
4309 // Refresh slow scrollbar markers in the background. Below, we paint whatever markers have already been computed.
4310 self.refresh_slow_scrollbar_markers(layout, &scrollbar_layout, cx);
4311
4312 let markers = self.editor.read(cx).scrollbar_marker_state.markers.clone();
4313 for marker in markers.iter().chain(&fast_markers) {
4314 let mut marker = marker.clone();
4315 marker.bounds.origin += hitbox.origin;
4316 cx.paint_quad(marker);
4317 }
4318
4319 cx.paint_quad(quad(
4320 thumb_bounds,
4321 Corners::default(),
4322 cx.theme().colors().scrollbar_thumb_background,
4323 Edges {
4324 top: Pixels::ZERO,
4325 right: Pixels::ZERO,
4326 bottom: Pixels::ZERO,
4327 left: ScrollbarLayout::BORDER_WIDTH,
4328 },
4329 cx.theme().colors().scrollbar_thumb_border,
4330 ));
4331 });
4332 }
4333
4334 cx.set_cursor_style(CursorStyle::Arrow, &hitbox);
4335
4336 cx.on_mouse_event({
4337 let editor = self.editor.clone();
4338
4339 let hitbox = hitbox.clone();
4340
4341 let mut mouse_position = cx.mouse_position();
4342 move |event: &MouseMoveEvent, phase, cx| {
4343 if phase == DispatchPhase::Capture {
4344 return;
4345 }
4346
4347 editor.update(cx, |editor, cx| {
4348 if event.pressed_button == Some(MouseButton::Left)
4349 && editor.scroll_manager.is_dragging_scrollbar(Axis::Vertical)
4350 {
4351 let y = mouse_position.y;
4352 let new_y = event.position.y;
4353 if (hitbox.top()..hitbox.bottom()).contains(&y) {
4354 let mut position = editor.scroll_position(cx);
4355 position.y += (new_y - y) / text_unit_size;
4356 if position.y < 0.0 {
4357 position.y = 0.0;
4358 }
4359 editor.set_scroll_position(position, cx);
4360 }
4361 } else {
4362 editor.scroll_manager.set_is_dragging_scrollbar(
4363 Axis::Vertical,
4364 false,
4365 cx,
4366 );
4367
4368 if hitbox.is_hovered(cx) {
4369 editor.scroll_manager.show_scrollbar(cx);
4370 }
4371 }
4372 mouse_position = event.position;
4373 })
4374 }
4375 });
4376
4377 if self
4378 .editor
4379 .read(cx)
4380 .scroll_manager
4381 .is_dragging_scrollbar(Axis::Vertical)
4382 {
4383 cx.on_mouse_event({
4384 let editor = self.editor.clone();
4385 move |_: &MouseUpEvent, phase, cx| {
4386 if phase == DispatchPhase::Capture {
4387 return;
4388 }
4389
4390 editor.update(cx, |editor, cx| {
4391 editor.scroll_manager.set_is_dragging_scrollbar(
4392 Axis::Vertical,
4393 false,
4394 cx,
4395 );
4396 cx.stop_propagation();
4397 });
4398 }
4399 });
4400 } else {
4401 cx.on_mouse_event({
4402 let editor = self.editor.clone();
4403
4404 move |event: &MouseDownEvent, phase, cx| {
4405 if phase == DispatchPhase::Capture || !hitbox.is_hovered(cx) {
4406 return;
4407 }
4408
4409 editor.update(cx, |editor, cx| {
4410 editor.scroll_manager.set_is_dragging_scrollbar(
4411 Axis::Vertical,
4412 true,
4413 cx,
4414 );
4415
4416 let y = event.position.y;
4417 if y < thumb_bounds.top() || thumb_bounds.bottom() < y {
4418 let center_row =
4419 ((y - hitbox.top()) / text_unit_size).round() as u32;
4420 let top_row = center_row.saturating_sub(
4421 (visible_range.end - visible_range.start) as u32 / 2,
4422 );
4423 let mut position = editor.scroll_position(cx);
4424 position.y = top_row as f32;
4425 editor.set_scroll_position(position, cx);
4426 } else {
4427 editor.scroll_manager.show_scrollbar(cx);
4428 }
4429
4430 cx.stop_propagation();
4431 });
4432 }
4433 });
4434 }
4435 }
4436 }
4437
4438 fn collect_fast_scrollbar_markers(
4439 &self,
4440 layout: &EditorLayout,
4441 scrollbar_layout: &ScrollbarLayout,
4442 cx: &mut WindowContext,
4443 ) -> Vec<PaintQuad> {
4444 const LIMIT: usize = 100;
4445 if !EditorSettings::get_global(cx).scrollbar.cursors || layout.cursors.len() > LIMIT {
4446 return vec![];
4447 }
4448 let cursor_ranges = layout
4449 .cursors
4450 .iter()
4451 .map(|(point, color)| ColoredRange {
4452 start: point.row(),
4453 end: point.row(),
4454 color: *color,
4455 })
4456 .collect_vec();
4457 scrollbar_layout.marker_quads_for_ranges(cursor_ranges, None)
4458 }
4459
4460 fn refresh_slow_scrollbar_markers(
4461 &self,
4462 layout: &EditorLayout,
4463 scrollbar_layout: &ScrollbarLayout,
4464 cx: &mut WindowContext,
4465 ) {
4466 self.editor.update(cx, |editor, cx| {
4467 if !editor.is_singleton(cx)
4468 || !editor
4469 .scrollbar_marker_state
4470 .should_refresh(scrollbar_layout.hitbox.size)
4471 {
4472 return;
4473 }
4474
4475 let scrollbar_layout = scrollbar_layout.clone();
4476 let background_highlights = editor.background_highlights.clone();
4477 let snapshot = layout.position_map.snapshot.clone();
4478 let theme = cx.theme().clone();
4479 let scrollbar_settings = EditorSettings::get_global(cx).scrollbar;
4480
4481 editor.scrollbar_marker_state.dirty = false;
4482 editor.scrollbar_marker_state.pending_refresh =
4483 Some(cx.spawn(|editor, mut cx| async move {
4484 let scrollbar_size = scrollbar_layout.hitbox.size;
4485 let scrollbar_markers = cx
4486 .background_executor()
4487 .spawn(async move {
4488 let max_point = snapshot.display_snapshot.buffer_snapshot.max_point();
4489 let mut marker_quads = Vec::new();
4490 if scrollbar_settings.git_diff {
4491 let marker_row_ranges = snapshot
4492 .diff_map
4493 .diff_hunks(&snapshot.buffer_snapshot)
4494 .map(|hunk| {
4495 let start_display_row =
4496 MultiBufferPoint::new(hunk.row_range.start.0, 0)
4497 .to_display_point(&snapshot.display_snapshot)
4498 .row();
4499 let mut end_display_row =
4500 MultiBufferPoint::new(hunk.row_range.end.0, 0)
4501 .to_display_point(&snapshot.display_snapshot)
4502 .row();
4503 if end_display_row != start_display_row {
4504 end_display_row.0 -= 1;
4505 }
4506 let color = match hunk_status(&hunk) {
4507 DiffHunkStatus::Added => theme.status().created,
4508 DiffHunkStatus::Modified => theme.status().modified,
4509 DiffHunkStatus::Removed => theme.status().deleted,
4510 };
4511 ColoredRange {
4512 start: start_display_row,
4513 end: end_display_row,
4514 color,
4515 }
4516 });
4517
4518 marker_quads.extend(
4519 scrollbar_layout
4520 .marker_quads_for_ranges(marker_row_ranges, Some(0)),
4521 );
4522 }
4523
4524 for (background_highlight_id, (_, background_ranges)) in
4525 background_highlights.iter()
4526 {
4527 let is_search_highlights = *background_highlight_id
4528 == TypeId::of::<BufferSearchHighlights>();
4529 let is_symbol_occurrences = *background_highlight_id
4530 == TypeId::of::<DocumentHighlightRead>()
4531 || *background_highlight_id
4532 == TypeId::of::<DocumentHighlightWrite>();
4533 if (is_search_highlights && scrollbar_settings.search_results)
4534 || (is_symbol_occurrences && scrollbar_settings.selected_symbol)
4535 {
4536 let mut color = theme.status().info;
4537 if is_symbol_occurrences {
4538 color.fade_out(0.5);
4539 }
4540 let marker_row_ranges = background_ranges.iter().map(|range| {
4541 let display_start = range
4542 .start
4543 .to_display_point(&snapshot.display_snapshot);
4544 let display_end =
4545 range.end.to_display_point(&snapshot.display_snapshot);
4546 ColoredRange {
4547 start: display_start.row(),
4548 end: display_end.row(),
4549 color,
4550 }
4551 });
4552 marker_quads.extend(
4553 scrollbar_layout
4554 .marker_quads_for_ranges(marker_row_ranges, Some(1)),
4555 );
4556 }
4557 }
4558
4559 if scrollbar_settings.diagnostics {
4560 let diagnostics = snapshot
4561 .buffer_snapshot
4562 .diagnostics_in_range::<_, Point>(
4563 Point::zero()..max_point,
4564 false,
4565 )
4566 // We want to sort by severity, in order to paint the most severe diagnostics last.
4567 .sorted_by_key(|diagnostic| {
4568 std::cmp::Reverse(diagnostic.diagnostic.severity)
4569 });
4570
4571 let marker_row_ranges = diagnostics.into_iter().map(|diagnostic| {
4572 let start_display = diagnostic
4573 .range
4574 .start
4575 .to_display_point(&snapshot.display_snapshot);
4576 let end_display = diagnostic
4577 .range
4578 .end
4579 .to_display_point(&snapshot.display_snapshot);
4580 let color = match diagnostic.diagnostic.severity {
4581 DiagnosticSeverity::ERROR => theme.status().error,
4582 DiagnosticSeverity::WARNING => theme.status().warning,
4583 DiagnosticSeverity::INFORMATION => theme.status().info,
4584 _ => theme.status().hint,
4585 };
4586 ColoredRange {
4587 start: start_display.row(),
4588 end: end_display.row(),
4589 color,
4590 }
4591 });
4592 marker_quads.extend(
4593 scrollbar_layout
4594 .marker_quads_for_ranges(marker_row_ranges, Some(2)),
4595 );
4596 }
4597
4598 Arc::from(marker_quads)
4599 })
4600 .await;
4601
4602 editor.update(&mut cx, |editor, cx| {
4603 editor.scrollbar_marker_state.markers = scrollbar_markers;
4604 editor.scrollbar_marker_state.scrollbar_size = scrollbar_size;
4605 editor.scrollbar_marker_state.pending_refresh = None;
4606 cx.notify();
4607 })?;
4608
4609 Ok(())
4610 }));
4611 });
4612 }
4613
4614 #[allow(clippy::too_many_arguments)]
4615 fn paint_highlighted_range(
4616 &self,
4617 range: Range<DisplayPoint>,
4618 color: Hsla,
4619 corner_radius: Pixels,
4620 line_end_overshoot: Pixels,
4621 layout: &EditorLayout,
4622 cx: &mut WindowContext,
4623 ) {
4624 let start_row = layout.visible_display_row_range.start;
4625 let end_row = layout.visible_display_row_range.end;
4626 if range.start != range.end {
4627 let row_range = if range.end.column() == 0 {
4628 cmp::max(range.start.row(), start_row)..cmp::min(range.end.row(), end_row)
4629 } else {
4630 cmp::max(range.start.row(), start_row)
4631 ..cmp::min(range.end.row().next_row(), end_row)
4632 };
4633
4634 let highlighted_range = HighlightedRange {
4635 color,
4636 line_height: layout.position_map.line_height,
4637 corner_radius,
4638 start_y: layout.content_origin.y
4639 + row_range.start.as_f32() * layout.position_map.line_height
4640 - layout.position_map.scroll_pixel_position.y,
4641 lines: row_range
4642 .iter_rows()
4643 .map(|row| {
4644 let line_layout =
4645 &layout.position_map.line_layouts[row.minus(start_row) as usize];
4646 HighlightedRangeLine {
4647 start_x: if row == range.start.row() {
4648 layout.content_origin.x
4649 + line_layout.x_for_index(range.start.column() as usize)
4650 - layout.position_map.scroll_pixel_position.x
4651 } else {
4652 layout.content_origin.x
4653 - layout.position_map.scroll_pixel_position.x
4654 },
4655 end_x: if row == range.end.row() {
4656 layout.content_origin.x
4657 + line_layout.x_for_index(range.end.column() as usize)
4658 - layout.position_map.scroll_pixel_position.x
4659 } else {
4660 layout.content_origin.x + line_layout.width + line_end_overshoot
4661 - layout.position_map.scroll_pixel_position.x
4662 },
4663 }
4664 })
4665 .collect(),
4666 };
4667
4668 highlighted_range.paint(layout.text_hitbox.bounds, cx);
4669 }
4670 }
4671
4672 fn paint_inline_blame(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4673 if let Some(mut inline_blame) = layout.inline_blame.take() {
4674 cx.paint_layer(layout.text_hitbox.bounds, |cx| {
4675 inline_blame.paint(cx);
4676 })
4677 }
4678 }
4679
4680 fn paint_blocks(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4681 for mut block in layout.blocks.drain(..) {
4682 block.element.paint(cx);
4683 }
4684 }
4685
4686 fn paint_inline_completion_popover(
4687 &mut self,
4688 layout: &mut EditorLayout,
4689 cx: &mut WindowContext,
4690 ) {
4691 if let Some(inline_completion_popover) = layout.inline_completion_popover.as_mut() {
4692 inline_completion_popover.paint(cx);
4693 }
4694 }
4695
4696 fn paint_mouse_context_menu(&mut self, layout: &mut EditorLayout, cx: &mut WindowContext) {
4697 if let Some(mouse_context_menu) = layout.mouse_context_menu.as_mut() {
4698 mouse_context_menu.paint(cx);
4699 }
4700 }
4701
4702 fn paint_scroll_wheel_listener(&mut self, layout: &EditorLayout, cx: &mut WindowContext) {
4703 cx.on_mouse_event({
4704 let position_map = layout.position_map.clone();
4705 let editor = self.editor.clone();
4706 let hitbox = layout.hitbox.clone();
4707 let mut delta = ScrollDelta::default();
4708
4709 // Set a minimum scroll_sensitivity of 0.01 to make sure the user doesn't
4710 // accidentally turn off their scrolling.
4711 let scroll_sensitivity = EditorSettings::get_global(cx).scroll_sensitivity.max(0.01);
4712
4713 move |event: &ScrollWheelEvent, phase, cx| {
4714 if phase == DispatchPhase::Bubble && hitbox.is_hovered(cx) {
4715 delta = delta.coalesce(event.delta);
4716 editor.update(cx, |editor, cx| {
4717 let position_map: &PositionMap = &position_map;
4718
4719 let line_height = position_map.line_height;
4720 let max_glyph_width = position_map.em_width;
4721 let (delta, axis) = match delta {
4722 gpui::ScrollDelta::Pixels(mut pixels) => {
4723 //Trackpad
4724 let axis = position_map.snapshot.ongoing_scroll.filter(&mut pixels);
4725 (pixels, axis)
4726 }
4727
4728 gpui::ScrollDelta::Lines(lines) => {
4729 //Not trackpad
4730 let pixels =
4731 point(lines.x * max_glyph_width, lines.y * line_height);
4732 (pixels, None)
4733 }
4734 };
4735
4736 let current_scroll_position = position_map.snapshot.scroll_position();
4737 let x = (current_scroll_position.x * max_glyph_width
4738 - (delta.x * scroll_sensitivity))
4739 / max_glyph_width;
4740 let y = (current_scroll_position.y * line_height
4741 - (delta.y * scroll_sensitivity))
4742 / line_height;
4743 let mut scroll_position =
4744 point(x, y).clamp(&point(0., 0.), &position_map.scroll_max);
4745 let forbid_vertical_scroll = editor.scroll_manager.forbid_vertical_scroll();
4746 if forbid_vertical_scroll {
4747 scroll_position.y = current_scroll_position.y;
4748 }
4749
4750 if scroll_position != current_scroll_position {
4751 editor.scroll(scroll_position, axis, cx);
4752 cx.stop_propagation();
4753 } else if y < 0. {
4754 // Due to clamping, we may fail to detect cases of overscroll to the top;
4755 // We want the scroll manager to get an update in such cases and detect the change of direction
4756 // on the next frame.
4757 cx.notify();
4758 }
4759 });
4760 }
4761 }
4762 });
4763 }
4764
4765 fn paint_mouse_listeners(
4766 &mut self,
4767 layout: &EditorLayout,
4768 hovered_hunk: Option<HoveredHunk>,
4769 cx: &mut WindowContext,
4770 ) {
4771 self.paint_scroll_wheel_listener(layout, cx);
4772
4773 cx.on_mouse_event({
4774 let position_map = layout.position_map.clone();
4775 let editor = self.editor.clone();
4776 let text_hitbox = layout.text_hitbox.clone();
4777 let gutter_hitbox = layout.gutter_hitbox.clone();
4778
4779 move |event: &MouseDownEvent, phase, cx| {
4780 if phase == DispatchPhase::Bubble {
4781 match event.button {
4782 MouseButton::Left => editor.update(cx, |editor, cx| {
4783 Self::mouse_left_down(
4784 editor,
4785 event,
4786 hovered_hunk.clone(),
4787 &position_map,
4788 &text_hitbox,
4789 &gutter_hitbox,
4790 cx,
4791 );
4792 }),
4793 MouseButton::Right => editor.update(cx, |editor, cx| {
4794 Self::mouse_right_down(editor, event, &position_map, &text_hitbox, cx);
4795 }),
4796 MouseButton::Middle => editor.update(cx, |editor, cx| {
4797 Self::mouse_middle_down(editor, event, &position_map, &text_hitbox, cx);
4798 }),
4799 _ => {}
4800 };
4801 }
4802 }
4803 });
4804
4805 cx.on_mouse_event({
4806 let editor = self.editor.clone();
4807 let position_map = layout.position_map.clone();
4808 let text_hitbox = layout.text_hitbox.clone();
4809
4810 move |event: &MouseUpEvent, phase, cx| {
4811 if phase == DispatchPhase::Bubble {
4812 editor.update(cx, |editor, cx| {
4813 Self::mouse_up(editor, event, &position_map, &text_hitbox, cx)
4814 });
4815 }
4816 }
4817 });
4818 cx.on_mouse_event({
4819 let position_map = layout.position_map.clone();
4820 let editor = self.editor.clone();
4821 let text_hitbox = layout.text_hitbox.clone();
4822 let gutter_hitbox = layout.gutter_hitbox.clone();
4823
4824 move |event: &MouseMoveEvent, phase, cx| {
4825 if phase == DispatchPhase::Bubble {
4826 editor.update(cx, |editor, cx| {
4827 if editor.hover_state.focused(cx) {
4828 return;
4829 }
4830 if event.pressed_button == Some(MouseButton::Left)
4831 || event.pressed_button == Some(MouseButton::Middle)
4832 {
4833 Self::mouse_dragged(
4834 editor,
4835 event,
4836 &position_map,
4837 text_hitbox.bounds,
4838 cx,
4839 )
4840 }
4841
4842 Self::mouse_moved(
4843 editor,
4844 event,
4845 &position_map,
4846 &text_hitbox,
4847 &gutter_hitbox,
4848 cx,
4849 )
4850 });
4851 }
4852 }
4853 });
4854 }
4855
4856 fn scrollbar_left(&self, bounds: &Bounds<Pixels>) -> Pixels {
4857 bounds.top_right().x - self.style.scrollbar_width
4858 }
4859
4860 fn column_pixels(&self, column: usize, cx: &WindowContext) -> Pixels {
4861 let style = &self.style;
4862 let font_size = style.text.font_size.to_pixels(cx.rem_size());
4863 let layout = cx
4864 .text_system()
4865 .shape_line(
4866 SharedString::from(" ".repeat(column)),
4867 font_size,
4868 &[TextRun {
4869 len: column,
4870 font: style.text.font(),
4871 color: Hsla::default(),
4872 background_color: None,
4873 underline: None,
4874 strikethrough: None,
4875 }],
4876 )
4877 .unwrap();
4878
4879 layout.width
4880 }
4881
4882 fn max_line_number_width(&self, snapshot: &EditorSnapshot, cx: &WindowContext) -> Pixels {
4883 let digit_count = (snapshot.widest_line_number() as f32).log10().floor() as usize + 1;
4884 self.column_pixels(digit_count, cx)
4885 }
4886}
4887
4888fn jump_data(
4889 snapshot: &EditorSnapshot,
4890 block_row_start: DisplayRow,
4891 height: u32,
4892 for_excerpt: &ExcerptInfo,
4893 cx: &mut WindowContext<'_>,
4894) -> JumpData {
4895 let range = &for_excerpt.range;
4896 let buffer = &for_excerpt.buffer;
4897 let jump_path = project::File::from_dyn(buffer.file()).map(|file| ProjectPath {
4898 worktree_id: file.worktree_id(cx),
4899 path: file.path.clone(),
4900 });
4901 let jump_anchor = range
4902 .primary
4903 .as_ref()
4904 .map_or(range.context.start, |primary| primary.start);
4905
4906 let excerpt_start = range.context.start;
4907 let jump_position = language::ToPoint::to_point(&jump_anchor, buffer);
4908 let offset_from_excerpt_start = if jump_anchor == excerpt_start {
4909 0
4910 } else {
4911 let excerpt_start_row = language::ToPoint::to_point(&jump_anchor, buffer).row;
4912 jump_position.row - excerpt_start_row
4913 };
4914 let line_offset_from_top = block_row_start.0 + height + offset_from_excerpt_start
4915 - snapshot
4916 .scroll_anchor
4917 .scroll_position(&snapshot.display_snapshot)
4918 .y as u32;
4919 JumpData {
4920 excerpt_id: for_excerpt.id,
4921 anchor: jump_anchor,
4922 position: language::ToPoint::to_point(&jump_anchor, buffer),
4923 path: jump_path,
4924 line_offset_from_top,
4925 }
4926}
4927
4928fn all_edits_insertions_or_deletions(
4929 edits: &Vec<(Range<Anchor>, String)>,
4930 snapshot: &MultiBufferSnapshot,
4931) -> bool {
4932 let mut all_insertions = true;
4933 let mut all_deletions = true;
4934
4935 for (range, new_text) in edits.iter() {
4936 let range_is_empty = range.to_offset(&snapshot).is_empty();
4937 let text_is_empty = new_text.is_empty();
4938
4939 if range_is_empty != text_is_empty {
4940 if range_is_empty {
4941 all_deletions = false;
4942 } else {
4943 all_insertions = false;
4944 }
4945 } else {
4946 return false;
4947 }
4948
4949 if !all_insertions && !all_deletions {
4950 return false;
4951 }
4952 }
4953 all_insertions || all_deletions
4954}
4955
4956#[allow(clippy::too_many_arguments)]
4957fn prepaint_gutter_button(
4958 button: IconButton,
4959 row: DisplayRow,
4960 line_height: Pixels,
4961 gutter_dimensions: &GutterDimensions,
4962 scroll_pixel_position: gpui::Point<Pixels>,
4963 gutter_hitbox: &Hitbox,
4964 rows_with_hunk_bounds: &HashMap<DisplayRow, Bounds<Pixels>>,
4965 cx: &mut WindowContext<'_>,
4966) -> AnyElement {
4967 let mut button = button.into_any_element();
4968 let available_space = size(
4969 AvailableSpace::MinContent,
4970 AvailableSpace::Definite(line_height),
4971 );
4972 let indicator_size = button.layout_as_root(available_space, cx);
4973
4974 let blame_width = gutter_dimensions.git_blame_entries_width;
4975 let gutter_width = rows_with_hunk_bounds
4976 .get(&row)
4977 .map(|bounds| bounds.size.width);
4978 let left_offset = blame_width.max(gutter_width).unwrap_or_default();
4979
4980 let mut x = left_offset;
4981 let available_width = gutter_dimensions.margin + gutter_dimensions.left_padding
4982 - indicator_size.width
4983 - left_offset;
4984 x += available_width / 2.;
4985
4986 let mut y = row.as_f32() * line_height - scroll_pixel_position.y;
4987 y += (line_height - indicator_size.height) / 2.;
4988
4989 button.prepaint_as_root(gutter_hitbox.origin + point(x, y), available_space, cx);
4990 button
4991}
4992
4993fn render_inline_blame_entry(
4994 blame: &gpui::Model<GitBlame>,
4995 blame_entry: BlameEntry,
4996 style: &EditorStyle,
4997 workspace: Option<WeakView<Workspace>>,
4998 cx: &mut WindowContext<'_>,
4999) -> AnyElement {
5000 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5001
5002 let author = blame_entry.author.as_deref().unwrap_or_default();
5003 let summary_enabled = ProjectSettings::get_global(cx)
5004 .git
5005 .show_inline_commit_summary();
5006
5007 let text = match blame_entry.summary.as_ref() {
5008 Some(summary) if summary_enabled => {
5009 format!("{}, {} - {}", author, relative_timestamp, summary)
5010 }
5011 _ => format!("{}, {}", author, relative_timestamp),
5012 };
5013
5014 let details = blame.read(cx).details_for_entry(&blame_entry);
5015
5016 let tooltip = cx.new_view(|_| BlameEntryTooltip::new(blame_entry, details, style, workspace));
5017
5018 h_flex()
5019 .id("inline-blame")
5020 .w_full()
5021 .font_family(style.text.font().family)
5022 .text_color(cx.theme().status().hint)
5023 .line_height(style.text.line_height)
5024 .child(Icon::new(IconName::FileGit).color(Color::Hint))
5025 .child(text)
5026 .gap_2()
5027 .hoverable_tooltip(move |_| tooltip.clone().into())
5028 .into_any()
5029}
5030
5031fn render_blame_entry(
5032 ix: usize,
5033 blame: &gpui::Model<GitBlame>,
5034 blame_entry: BlameEntry,
5035 style: &EditorStyle,
5036 last_used_color: &mut Option<(PlayerColor, Oid)>,
5037 editor: View<Editor>,
5038 cx: &mut WindowContext<'_>,
5039) -> AnyElement {
5040 let mut sha_color = cx
5041 .theme()
5042 .players()
5043 .color_for_participant(blame_entry.sha.into());
5044 // If the last color we used is the same as the one we get for this line, but
5045 // the commit SHAs are different, then we try again to get a different color.
5046 match *last_used_color {
5047 Some((color, sha)) if sha != blame_entry.sha && color.cursor == sha_color.cursor => {
5048 let index: u32 = blame_entry.sha.into();
5049 sha_color = cx.theme().players().color_for_participant(index + 1);
5050 }
5051 _ => {}
5052 };
5053 last_used_color.replace((sha_color, blame_entry.sha));
5054
5055 let relative_timestamp = blame_entry_relative_timestamp(&blame_entry);
5056
5057 let short_commit_id = blame_entry.sha.display_short();
5058
5059 let author_name = blame_entry.author.as_deref().unwrap_or("<no name>");
5060 let name = util::truncate_and_trailoff(author_name, GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED);
5061
5062 let details = blame.read(cx).details_for_entry(&blame_entry);
5063
5064 let workspace = editor.read(cx).workspace.as_ref().map(|(w, _)| w.clone());
5065
5066 let tooltip = cx.new_view(|_| {
5067 BlameEntryTooltip::new(blame_entry.clone(), details.clone(), style, workspace)
5068 });
5069
5070 h_flex()
5071 .w_full()
5072 .justify_between()
5073 .font_family(style.text.font().family)
5074 .line_height(style.text.line_height)
5075 .id(("blame", ix))
5076 .text_color(cx.theme().status().hint)
5077 .pr_2()
5078 .gap_2()
5079 .child(
5080 h_flex()
5081 .items_center()
5082 .gap_2()
5083 .child(div().text_color(sha_color.cursor).child(short_commit_id))
5084 .child(name),
5085 )
5086 .child(relative_timestamp)
5087 .on_mouse_down(MouseButton::Right, {
5088 let blame_entry = blame_entry.clone();
5089 let details = details.clone();
5090 move |event, cx| {
5091 deploy_blame_entry_context_menu(
5092 &blame_entry,
5093 details.as_ref(),
5094 editor.clone(),
5095 event.position,
5096 cx,
5097 );
5098 }
5099 })
5100 .hover(|style| style.bg(cx.theme().colors().element_hover))
5101 .when_some(
5102 details.and_then(|details| details.permalink),
5103 |this, url| {
5104 let url = url.clone();
5105 this.cursor_pointer().on_click(move |_, cx| {
5106 cx.stop_propagation();
5107 cx.open_url(url.as_str())
5108 })
5109 },
5110 )
5111 .hoverable_tooltip(move |_| tooltip.clone().into())
5112 .into_any()
5113}
5114
5115fn deploy_blame_entry_context_menu(
5116 blame_entry: &BlameEntry,
5117 details: Option<&CommitDetails>,
5118 editor: View<Editor>,
5119 position: gpui::Point<Pixels>,
5120 cx: &mut WindowContext<'_>,
5121) {
5122 let context_menu = ContextMenu::build(cx, move |menu, _| {
5123 let sha = format!("{}", blame_entry.sha);
5124 menu.on_blur_subscription(Subscription::new(|| {}))
5125 .entry("Copy commit SHA", None, move |cx| {
5126 cx.write_to_clipboard(ClipboardItem::new_string(sha.clone()));
5127 })
5128 .when_some(
5129 details.and_then(|details| details.permalink.clone()),
5130 |this, url| this.entry("Open permalink", None, move |cx| cx.open_url(url.as_str())),
5131 )
5132 });
5133
5134 editor.update(cx, move |editor, cx| {
5135 editor.mouse_context_menu = Some(MouseContextMenu::new(
5136 MenuPosition::PinnedToScreen(position),
5137 context_menu,
5138 cx,
5139 ));
5140 cx.notify();
5141 });
5142}
5143
5144#[derive(Debug)]
5145pub(crate) struct LineWithInvisibles {
5146 fragments: SmallVec<[LineFragment; 1]>,
5147 invisibles: Vec<Invisible>,
5148 len: usize,
5149 width: Pixels,
5150 font_size: Pixels,
5151}
5152
5153#[allow(clippy::large_enum_variant)]
5154enum LineFragment {
5155 Text(ShapedLine),
5156 Element {
5157 element: Option<AnyElement>,
5158 size: Size<Pixels>,
5159 len: usize,
5160 },
5161}
5162
5163impl fmt::Debug for LineFragment {
5164 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
5165 match self {
5166 LineFragment::Text(shaped_line) => f.debug_tuple("Text").field(shaped_line).finish(),
5167 LineFragment::Element { size, len, .. } => f
5168 .debug_struct("Element")
5169 .field("size", size)
5170 .field("len", len)
5171 .finish(),
5172 }
5173 }
5174}
5175
5176impl LineWithInvisibles {
5177 #[allow(clippy::too_many_arguments)]
5178 fn from_chunks<'a>(
5179 chunks: impl Iterator<Item = HighlightedChunk<'a>>,
5180 editor_style: &EditorStyle,
5181 max_line_len: usize,
5182 max_line_count: usize,
5183 editor_mode: EditorMode,
5184 text_width: Pixels,
5185 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
5186 cx: &mut WindowContext,
5187 ) -> Vec<Self> {
5188 let text_style = &editor_style.text;
5189 let mut layouts = Vec::with_capacity(max_line_count);
5190 let mut fragments: SmallVec<[LineFragment; 1]> = SmallVec::new();
5191 let mut line = String::new();
5192 let mut invisibles = Vec::new();
5193 let mut width = Pixels::ZERO;
5194 let mut len = 0;
5195 let mut styles = Vec::new();
5196 let mut non_whitespace_added = false;
5197 let mut row = 0;
5198 let mut line_exceeded_max_len = false;
5199 let font_size = text_style.font_size.to_pixels(cx.rem_size());
5200
5201 let ellipsis = SharedString::from("⋯");
5202
5203 for highlighted_chunk in chunks.chain([HighlightedChunk {
5204 text: "\n",
5205 style: None,
5206 is_tab: false,
5207 replacement: None,
5208 }]) {
5209 if let Some(replacement) = highlighted_chunk.replacement {
5210 if !line.is_empty() {
5211 let shaped_line = cx
5212 .text_system()
5213 .shape_line(line.clone().into(), font_size, &styles)
5214 .unwrap();
5215 width += shaped_line.width;
5216 len += shaped_line.len;
5217 fragments.push(LineFragment::Text(shaped_line));
5218 line.clear();
5219 styles.clear();
5220 }
5221
5222 match replacement {
5223 ChunkReplacement::Renderer(renderer) => {
5224 let available_width = if renderer.constrain_width {
5225 let chunk = if highlighted_chunk.text == ellipsis.as_ref() {
5226 ellipsis.clone()
5227 } else {
5228 SharedString::from(Arc::from(highlighted_chunk.text))
5229 };
5230 let shaped_line = cx
5231 .text_system()
5232 .shape_line(
5233 chunk,
5234 font_size,
5235 &[text_style.to_run(highlighted_chunk.text.len())],
5236 )
5237 .unwrap();
5238 AvailableSpace::Definite(shaped_line.width)
5239 } else {
5240 AvailableSpace::MinContent
5241 };
5242
5243 let mut element = (renderer.render)(&mut ChunkRendererContext {
5244 context: cx,
5245 max_width: text_width,
5246 });
5247 let line_height = text_style.line_height_in_pixels(cx.rem_size());
5248 let size = element.layout_as_root(
5249 size(available_width, AvailableSpace::Definite(line_height)),
5250 cx,
5251 );
5252
5253 width += size.width;
5254 len += highlighted_chunk.text.len();
5255 fragments.push(LineFragment::Element {
5256 element: Some(element),
5257 size,
5258 len: highlighted_chunk.text.len(),
5259 });
5260 }
5261 ChunkReplacement::Str(x) => {
5262 let text_style = if let Some(style) = highlighted_chunk.style {
5263 Cow::Owned(text_style.clone().highlight(style))
5264 } else {
5265 Cow::Borrowed(text_style)
5266 };
5267
5268 let run = TextRun {
5269 len: x.len(),
5270 font: text_style.font(),
5271 color: text_style.color,
5272 background_color: text_style.background_color,
5273 underline: text_style.underline,
5274 strikethrough: text_style.strikethrough,
5275 };
5276 let line_layout = cx
5277 .text_system()
5278 .shape_line(x, font_size, &[run])
5279 .unwrap()
5280 .with_len(highlighted_chunk.text.len());
5281
5282 width += line_layout.width;
5283 len += highlighted_chunk.text.len();
5284 fragments.push(LineFragment::Text(line_layout))
5285 }
5286 }
5287 } else {
5288 for (ix, mut line_chunk) in highlighted_chunk.text.split('\n').enumerate() {
5289 if ix > 0 {
5290 let shaped_line = cx
5291 .text_system()
5292 .shape_line(line.clone().into(), font_size, &styles)
5293 .unwrap();
5294 width += shaped_line.width;
5295 len += shaped_line.len;
5296 fragments.push(LineFragment::Text(shaped_line));
5297 layouts.push(Self {
5298 width: mem::take(&mut width),
5299 len: mem::take(&mut len),
5300 fragments: mem::take(&mut fragments),
5301 invisibles: std::mem::take(&mut invisibles),
5302 font_size,
5303 });
5304
5305 line.clear();
5306 styles.clear();
5307 row += 1;
5308 line_exceeded_max_len = false;
5309 non_whitespace_added = false;
5310 if row == max_line_count {
5311 return layouts;
5312 }
5313 }
5314
5315 if !line_chunk.is_empty() && !line_exceeded_max_len {
5316 let text_style = if let Some(style) = highlighted_chunk.style {
5317 Cow::Owned(text_style.clone().highlight(style))
5318 } else {
5319 Cow::Borrowed(text_style)
5320 };
5321
5322 if line.len() + line_chunk.len() > max_line_len {
5323 let mut chunk_len = max_line_len - line.len();
5324 while !line_chunk.is_char_boundary(chunk_len) {
5325 chunk_len -= 1;
5326 }
5327 line_chunk = &line_chunk[..chunk_len];
5328 line_exceeded_max_len = true;
5329 }
5330
5331 styles.push(TextRun {
5332 len: line_chunk.len(),
5333 font: text_style.font(),
5334 color: text_style.color,
5335 background_color: text_style.background_color,
5336 underline: text_style.underline,
5337 strikethrough: text_style.strikethrough,
5338 });
5339
5340 if editor_mode == EditorMode::Full {
5341 // Line wrap pads its contents with fake whitespaces,
5342 // avoid printing them
5343 let is_soft_wrapped = is_row_soft_wrapped(row);
5344 if highlighted_chunk.is_tab {
5345 if non_whitespace_added || !is_soft_wrapped {
5346 invisibles.push(Invisible::Tab {
5347 line_start_offset: line.len(),
5348 line_end_offset: line.len() + line_chunk.len(),
5349 });
5350 }
5351 } else {
5352 invisibles.extend(
5353 line_chunk
5354 .bytes()
5355 .enumerate()
5356 .filter(|(_, line_byte)| {
5357 let is_whitespace =
5358 (*line_byte as char).is_whitespace();
5359 non_whitespace_added |= !is_whitespace;
5360 is_whitespace
5361 && (non_whitespace_added || !is_soft_wrapped)
5362 })
5363 .map(|(whitespace_index, _)| Invisible::Whitespace {
5364 line_offset: line.len() + whitespace_index,
5365 }),
5366 )
5367 }
5368 }
5369
5370 line.push_str(line_chunk);
5371 }
5372 }
5373 }
5374 }
5375
5376 layouts
5377 }
5378
5379 fn prepaint(
5380 &mut self,
5381 line_height: Pixels,
5382 scroll_pixel_position: gpui::Point<Pixels>,
5383 row: DisplayRow,
5384 content_origin: gpui::Point<Pixels>,
5385 line_elements: &mut SmallVec<[AnyElement; 1]>,
5386 cx: &mut WindowContext,
5387 ) {
5388 let line_y = line_height * (row.as_f32() - scroll_pixel_position.y / line_height);
5389 let mut fragment_origin = content_origin + gpui::point(-scroll_pixel_position.x, line_y);
5390 for fragment in &mut self.fragments {
5391 match fragment {
5392 LineFragment::Text(line) => {
5393 fragment_origin.x += line.width;
5394 }
5395 LineFragment::Element { element, size, .. } => {
5396 let mut element = element
5397 .take()
5398 .expect("you can't prepaint LineWithInvisibles twice");
5399
5400 // Center the element vertically within the line.
5401 let mut element_origin = fragment_origin;
5402 element_origin.y += (line_height - size.height) / 2.;
5403 element.prepaint_at(element_origin, cx);
5404 line_elements.push(element);
5405
5406 fragment_origin.x += size.width;
5407 }
5408 }
5409 }
5410 }
5411
5412 fn draw(
5413 &self,
5414 layout: &EditorLayout,
5415 row: DisplayRow,
5416 content_origin: gpui::Point<Pixels>,
5417 whitespace_setting: ShowWhitespaceSetting,
5418 selection_ranges: &[Range<DisplayPoint>],
5419 cx: &mut WindowContext,
5420 ) {
5421 let line_height = layout.position_map.line_height;
5422 let line_y = line_height
5423 * (row.as_f32() - layout.position_map.scroll_pixel_position.y / line_height);
5424
5425 let mut fragment_origin =
5426 content_origin + gpui::point(-layout.position_map.scroll_pixel_position.x, line_y);
5427
5428 for fragment in &self.fragments {
5429 match fragment {
5430 LineFragment::Text(line) => {
5431 line.paint(fragment_origin, line_height, cx).log_err();
5432 fragment_origin.x += line.width;
5433 }
5434 LineFragment::Element { size, .. } => {
5435 fragment_origin.x += size.width;
5436 }
5437 }
5438 }
5439
5440 self.draw_invisibles(
5441 selection_ranges,
5442 layout,
5443 content_origin,
5444 line_y,
5445 row,
5446 line_height,
5447 whitespace_setting,
5448 cx,
5449 );
5450 }
5451
5452 #[allow(clippy::too_many_arguments)]
5453 fn draw_invisibles(
5454 &self,
5455 selection_ranges: &[Range<DisplayPoint>],
5456 layout: &EditorLayout,
5457 content_origin: gpui::Point<Pixels>,
5458 line_y: Pixels,
5459 row: DisplayRow,
5460 line_height: Pixels,
5461 whitespace_setting: ShowWhitespaceSetting,
5462 cx: &mut WindowContext,
5463 ) {
5464 let extract_whitespace_info = |invisible: &Invisible| {
5465 let (token_offset, token_end_offset, invisible_symbol) = match invisible {
5466 Invisible::Tab {
5467 line_start_offset,
5468 line_end_offset,
5469 } => (*line_start_offset, *line_end_offset, &layout.tab_invisible),
5470 Invisible::Whitespace { line_offset } => {
5471 (*line_offset, line_offset + 1, &layout.space_invisible)
5472 }
5473 };
5474
5475 let x_offset = self.x_for_index(token_offset);
5476 let invisible_offset =
5477 (layout.position_map.em_width - invisible_symbol.width).max(Pixels::ZERO) / 2.0;
5478 let origin = content_origin
5479 + gpui::point(
5480 x_offset + invisible_offset - layout.position_map.scroll_pixel_position.x,
5481 line_y,
5482 );
5483
5484 (
5485 [token_offset, token_end_offset],
5486 Box::new(move |cx: &mut WindowContext| {
5487 invisible_symbol.paint(origin, line_height, cx).log_err();
5488 }),
5489 )
5490 };
5491
5492 let invisible_iter = self.invisibles.iter().map(extract_whitespace_info);
5493 match whitespace_setting {
5494 ShowWhitespaceSetting::None => (),
5495 ShowWhitespaceSetting::All => invisible_iter.for_each(|(_, paint)| paint(cx)),
5496 ShowWhitespaceSetting::Selection => invisible_iter.for_each(|([start, _], paint)| {
5497 let invisible_point = DisplayPoint::new(row, start as u32);
5498 if !selection_ranges
5499 .iter()
5500 .any(|region| region.start <= invisible_point && invisible_point < region.end)
5501 {
5502 return;
5503 }
5504
5505 paint(cx);
5506 }),
5507
5508 // For a whitespace to be on a boundary, any of the following conditions need to be met:
5509 // - It is a tab
5510 // - It is adjacent to an edge (start or end)
5511 // - It is adjacent to a whitespace (left or right)
5512 ShowWhitespaceSetting::Boundary => {
5513 // We'll need to keep track of the last invisible we've seen and then check if we are adjacent to it for some of
5514 // the above cases.
5515 // Note: We zip in the original `invisibles` to check for tab equality
5516 let mut last_seen: Option<(bool, usize, Box<dyn Fn(&mut WindowContext)>)> = None;
5517 for (([start, end], paint), invisible) in
5518 invisible_iter.zip_eq(self.invisibles.iter())
5519 {
5520 let should_render = match (&last_seen, invisible) {
5521 (_, Invisible::Tab { .. }) => true,
5522 (Some((_, last_end, _)), _) => *last_end == start,
5523 _ => false,
5524 };
5525
5526 if should_render || start == 0 || end == self.len {
5527 paint(cx);
5528
5529 // Since we are scanning from the left, we will skip over the first available whitespace that is part
5530 // of a boundary between non-whitespace segments, so we correct by manually redrawing it if needed.
5531 if let Some((should_render_last, last_end, paint_last)) = last_seen {
5532 // Note that we need to make sure that the last one is actually adjacent
5533 if !should_render_last && last_end == start {
5534 paint_last(cx);
5535 }
5536 }
5537 }
5538
5539 // Manually render anything within a selection
5540 let invisible_point = DisplayPoint::new(row, start as u32);
5541 if selection_ranges.iter().any(|region| {
5542 region.start <= invisible_point && invisible_point < region.end
5543 }) {
5544 paint(cx);
5545 }
5546
5547 last_seen = Some((should_render, end, paint));
5548 }
5549 }
5550 }
5551 }
5552
5553 pub fn x_for_index(&self, index: usize) -> Pixels {
5554 let mut fragment_start_x = Pixels::ZERO;
5555 let mut fragment_start_index = 0;
5556
5557 for fragment in &self.fragments {
5558 match fragment {
5559 LineFragment::Text(shaped_line) => {
5560 let fragment_end_index = fragment_start_index + shaped_line.len;
5561 if index < fragment_end_index {
5562 return fragment_start_x
5563 + shaped_line.x_for_index(index - fragment_start_index);
5564 }
5565 fragment_start_x += shaped_line.width;
5566 fragment_start_index = fragment_end_index;
5567 }
5568 LineFragment::Element { len, size, .. } => {
5569 let fragment_end_index = fragment_start_index + len;
5570 if index < fragment_end_index {
5571 return fragment_start_x;
5572 }
5573 fragment_start_x += size.width;
5574 fragment_start_index = fragment_end_index;
5575 }
5576 }
5577 }
5578
5579 fragment_start_x
5580 }
5581
5582 pub fn index_for_x(&self, x: Pixels) -> Option<usize> {
5583 let mut fragment_start_x = Pixels::ZERO;
5584 let mut fragment_start_index = 0;
5585
5586 for fragment in &self.fragments {
5587 match fragment {
5588 LineFragment::Text(shaped_line) => {
5589 let fragment_end_x = fragment_start_x + shaped_line.width;
5590 if x < fragment_end_x {
5591 return Some(
5592 fragment_start_index + shaped_line.index_for_x(x - fragment_start_x)?,
5593 );
5594 }
5595 fragment_start_x = fragment_end_x;
5596 fragment_start_index += shaped_line.len;
5597 }
5598 LineFragment::Element { len, size, .. } => {
5599 let fragment_end_x = fragment_start_x + size.width;
5600 if x < fragment_end_x {
5601 return Some(fragment_start_index);
5602 }
5603 fragment_start_index += len;
5604 fragment_start_x = fragment_end_x;
5605 }
5606 }
5607 }
5608
5609 None
5610 }
5611
5612 pub fn font_id_for_index(&self, index: usize) -> Option<FontId> {
5613 let mut fragment_start_index = 0;
5614
5615 for fragment in &self.fragments {
5616 match fragment {
5617 LineFragment::Text(shaped_line) => {
5618 let fragment_end_index = fragment_start_index + shaped_line.len;
5619 if index < fragment_end_index {
5620 return shaped_line.font_id_for_index(index - fragment_start_index);
5621 }
5622 fragment_start_index = fragment_end_index;
5623 }
5624 LineFragment::Element { len, .. } => {
5625 let fragment_end_index = fragment_start_index + len;
5626 if index < fragment_end_index {
5627 return None;
5628 }
5629 fragment_start_index = fragment_end_index;
5630 }
5631 }
5632 }
5633
5634 None
5635 }
5636}
5637
5638#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5639enum Invisible {
5640 /// A tab character
5641 ///
5642 /// A tab character is internally represented by spaces (configured by the user's tab width)
5643 /// aligned to the nearest column, so it's necessary to store the start and end offset for
5644 /// adjacency checks.
5645 Tab {
5646 line_start_offset: usize,
5647 line_end_offset: usize,
5648 },
5649 Whitespace {
5650 line_offset: usize,
5651 },
5652}
5653
5654impl EditorElement {
5655 /// Returns the rem size to use when rendering the [`EditorElement`].
5656 ///
5657 /// This allows UI elements to scale based on the `buffer_font_size`.
5658 fn rem_size(&self, cx: &WindowContext) -> Option<Pixels> {
5659 match self.editor.read(cx).mode {
5660 EditorMode::Full => {
5661 let buffer_font_size = self.style.text.font_size;
5662 match buffer_font_size {
5663 AbsoluteLength::Pixels(pixels) => {
5664 let rem_size_scale = {
5665 // Our default UI font size is 14px on a 16px base scale.
5666 // This means the default UI font size is 0.875rems.
5667 let default_font_size_scale = 14. / ui::BASE_REM_SIZE_IN_PX;
5668
5669 // We then determine the delta between a single rem and the default font
5670 // size scale.
5671 let default_font_size_delta = 1. - default_font_size_scale;
5672
5673 // Finally, we add this delta to 1rem to get the scale factor that
5674 // should be used to scale up the UI.
5675 1. + default_font_size_delta
5676 };
5677
5678 Some(pixels * rem_size_scale)
5679 }
5680 AbsoluteLength::Rems(rems) => {
5681 Some(rems.to_pixels(ui::BASE_REM_SIZE_IN_PX.into()))
5682 }
5683 }
5684 }
5685 // We currently use single-line and auto-height editors in UI contexts,
5686 // so we don't want to scale everything with the buffer font size, as it
5687 // ends up looking off.
5688 EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => None,
5689 }
5690 }
5691}
5692
5693impl Element for EditorElement {
5694 type RequestLayoutState = ();
5695 type PrepaintState = EditorLayout;
5696
5697 fn id(&self) -> Option<ElementId> {
5698 None
5699 }
5700
5701 fn request_layout(
5702 &mut self,
5703 _: Option<&GlobalElementId>,
5704 cx: &mut WindowContext,
5705 ) -> (gpui::LayoutId, ()) {
5706 let rem_size = self.rem_size(cx);
5707 cx.with_rem_size(rem_size, |cx| {
5708 self.editor.update(cx, |editor, cx| {
5709 editor.set_style(self.style.clone(), cx);
5710
5711 let layout_id = match editor.mode {
5712 EditorMode::SingleLine { auto_width } => {
5713 let rem_size = cx.rem_size();
5714
5715 let height = self.style.text.line_height_in_pixels(rem_size);
5716 if auto_width {
5717 let editor_handle = cx.view().clone();
5718 let style = self.style.clone();
5719 cx.request_measured_layout(Style::default(), move |_, _, cx| {
5720 let editor_snapshot =
5721 editor_handle.update(cx, |editor, cx| editor.snapshot(cx));
5722 let line = Self::layout_lines(
5723 DisplayRow(0)..DisplayRow(1),
5724 &editor_snapshot,
5725 &style,
5726 px(f32::MAX),
5727 |_| false, // Single lines never soft wrap
5728 cx,
5729 )
5730 .pop()
5731 .unwrap();
5732
5733 let font_id = cx.text_system().resolve_font(&style.text.font());
5734 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5735 let em_width = cx
5736 .text_system()
5737 .typographic_bounds(font_id, font_size, 'm')
5738 .unwrap()
5739 .size
5740 .width;
5741
5742 size(line.width + em_width, height)
5743 })
5744 } else {
5745 let mut style = Style::default();
5746 style.size.height = height.into();
5747 style.size.width = relative(1.).into();
5748 cx.request_layout(style, None)
5749 }
5750 }
5751 EditorMode::AutoHeight { max_lines } => {
5752 let editor_handle = cx.view().clone();
5753 let max_line_number_width =
5754 self.max_line_number_width(&editor.snapshot(cx), cx);
5755 cx.request_measured_layout(
5756 Style::default(),
5757 move |known_dimensions, available_space, cx| {
5758 editor_handle
5759 .update(cx, |editor, cx| {
5760 compute_auto_height_layout(
5761 editor,
5762 max_lines,
5763 max_line_number_width,
5764 known_dimensions,
5765 available_space.width,
5766 cx,
5767 )
5768 })
5769 .unwrap_or_default()
5770 },
5771 )
5772 }
5773 EditorMode::Full => {
5774 let mut style = Style::default();
5775 style.size.width = relative(1.).into();
5776 style.size.height = relative(1.).into();
5777 cx.request_layout(style, None)
5778 }
5779 };
5780
5781 (layout_id, ())
5782 })
5783 })
5784 }
5785
5786 fn prepaint(
5787 &mut self,
5788 _: Option<&GlobalElementId>,
5789 bounds: Bounds<Pixels>,
5790 _: &mut Self::RequestLayoutState,
5791 cx: &mut WindowContext,
5792 ) -> Self::PrepaintState {
5793 let text_style = TextStyleRefinement {
5794 font_size: Some(self.style.text.font_size),
5795 line_height: Some(self.style.text.line_height),
5796 ..Default::default()
5797 };
5798 let focus_handle = self.editor.focus_handle(cx);
5799 cx.set_view_id(self.editor.entity_id());
5800 cx.set_focus_handle(&focus_handle);
5801
5802 let rem_size = self.rem_size(cx);
5803 cx.with_rem_size(rem_size, |cx| {
5804 cx.with_text_style(Some(text_style), |cx| {
5805 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
5806 let mut snapshot = self.editor.update(cx, |editor, cx| editor.snapshot(cx));
5807 let style = self.style.clone();
5808
5809 let font_id = cx.text_system().resolve_font(&style.text.font());
5810 let font_size = style.text.font_size.to_pixels(cx.rem_size());
5811 let line_height = style.text.line_height_in_pixels(cx.rem_size());
5812 let em_width = cx
5813 .text_system()
5814 .typographic_bounds(font_id, font_size, 'm')
5815 .unwrap()
5816 .size
5817 .width;
5818 let em_advance = cx
5819 .text_system()
5820 .advance(font_id, font_size, 'm')
5821 .unwrap()
5822 .width;
5823
5824 let letter_size = size(em_width, line_height);
5825
5826 let gutter_dimensions = snapshot.gutter_dimensions(
5827 font_id,
5828 font_size,
5829 em_width,
5830 em_advance,
5831 self.max_line_number_width(&snapshot, cx),
5832 cx,
5833 );
5834 let text_width = bounds.size.width - gutter_dimensions.width;
5835
5836 let editor_width = text_width - gutter_dimensions.margin - em_width;
5837
5838 snapshot = self.editor.update(cx, |editor, cx| {
5839 editor.last_bounds = Some(bounds);
5840 editor.gutter_dimensions = gutter_dimensions;
5841 editor.set_visible_line_count(bounds.size.height / line_height, cx);
5842
5843 if matches!(editor.mode, EditorMode::AutoHeight { .. }) {
5844 snapshot
5845 } else {
5846 let wrap_width = match editor.soft_wrap_mode(cx) {
5847 SoftWrap::GitDiff => None,
5848 SoftWrap::None => Some((MAX_LINE_LEN / 2) as f32 * em_advance),
5849 SoftWrap::EditorWidth => Some(editor_width),
5850 SoftWrap::Column(column) => Some(column as f32 * em_advance),
5851 SoftWrap::Bounded(column) => {
5852 Some(editor_width.min(column as f32 * em_advance))
5853 }
5854 };
5855
5856 if editor.set_wrap_width(wrap_width, cx) {
5857 editor.snapshot(cx)
5858 } else {
5859 snapshot
5860 }
5861 }
5862 });
5863
5864 let wrap_guides = self
5865 .editor
5866 .read(cx)
5867 .wrap_guides(cx)
5868 .iter()
5869 .map(|(guide, active)| (self.column_pixels(*guide, cx), *active))
5870 .collect::<SmallVec<[_; 2]>>();
5871
5872 let hitbox = cx.insert_hitbox(bounds, false);
5873 let gutter_hitbox =
5874 cx.insert_hitbox(gutter_bounds(bounds, gutter_dimensions), false);
5875 let text_hitbox = cx.insert_hitbox(
5876 Bounds {
5877 origin: gutter_hitbox.top_right(),
5878 size: size(text_width, bounds.size.height),
5879 },
5880 false,
5881 );
5882 // Offset the content_bounds from the text_bounds by the gutter margin (which
5883 // is roughly half a character wide) to make hit testing work more like how we want.
5884 let content_origin =
5885 text_hitbox.origin + point(gutter_dimensions.margin, Pixels::ZERO);
5886
5887 let scrollbar_bounds =
5888 Bounds::from_corners(content_origin, bounds.bottom_right());
5889
5890 let height_in_lines = scrollbar_bounds.size.height / line_height;
5891
5892 // NOTE: The max row number in the current file, minus one
5893 let max_row = snapshot.max_point().row().as_f32();
5894
5895 // NOTE: The max scroll position for the top of the window
5896 let max_scroll_top = if matches!(snapshot.mode, EditorMode::AutoHeight { .. }) {
5897 (max_row - height_in_lines + 1.).max(0.)
5898 } else {
5899 let settings = EditorSettings::get_global(cx);
5900 match settings.scroll_beyond_last_line {
5901 ScrollBeyondLastLine::OnePage => max_row,
5902 ScrollBeyondLastLine::Off => (max_row - height_in_lines + 1.).max(0.),
5903 ScrollBeyondLastLine::VerticalScrollMargin => {
5904 (max_row - height_in_lines + 1. + settings.vertical_scroll_margin)
5905 .max(0.)
5906 }
5907 }
5908 };
5909
5910 // TODO: Autoscrolling for both axes
5911 let mut autoscroll_request = None;
5912 let mut autoscroll_containing_element = false;
5913 let mut autoscroll_horizontally = false;
5914 self.editor.update(cx, |editor, cx| {
5915 autoscroll_request = editor.autoscroll_request();
5916 autoscroll_containing_element =
5917 autoscroll_request.is_some() || editor.has_pending_selection();
5918 // TODO: Is this horizontal or vertical?!
5919 autoscroll_horizontally =
5920 editor.autoscroll_vertically(bounds, line_height, max_scroll_top, cx);
5921 snapshot = editor.snapshot(cx);
5922 });
5923
5924 let mut scroll_position = snapshot.scroll_position();
5925 // The scroll position is a fractional point, the whole number of which represents
5926 // the top of the window in terms of display rows.
5927 let start_row = DisplayRow(scroll_position.y as u32);
5928 let max_row = snapshot.max_point().row();
5929 let end_row = cmp::min(
5930 (scroll_position.y + height_in_lines).ceil() as u32,
5931 max_row.next_row().0,
5932 );
5933 let end_row = DisplayRow(end_row);
5934
5935 let buffer_rows = snapshot
5936 .buffer_rows(start_row)
5937 .take((start_row..end_row).len())
5938 .collect::<Vec<_>>();
5939 let is_row_soft_wrapped =
5940 |row| buffer_rows.get(row).copied().flatten().is_none();
5941
5942 let start_anchor = if start_row == Default::default() {
5943 Anchor::min()
5944 } else {
5945 snapshot.buffer_snapshot.anchor_before(
5946 DisplayPoint::new(start_row, 0).to_offset(&snapshot, Bias::Left),
5947 )
5948 };
5949 let end_anchor = if end_row > max_row {
5950 Anchor::max()
5951 } else {
5952 snapshot.buffer_snapshot.anchor_before(
5953 DisplayPoint::new(end_row, 0).to_offset(&snapshot, Bias::Right),
5954 )
5955 };
5956
5957 let highlighted_rows = self
5958 .editor
5959 .update(cx, |editor, cx| editor.highlighted_display_rows(cx));
5960 let highlighted_ranges = self.editor.read(cx).background_highlights_in_range(
5961 start_anchor..end_anchor,
5962 &snapshot.display_snapshot,
5963 cx.theme().colors(),
5964 );
5965 let highlighted_gutter_ranges =
5966 self.editor.read(cx).gutter_highlights_in_range(
5967 start_anchor..end_anchor,
5968 &snapshot.display_snapshot,
5969 cx,
5970 );
5971
5972 let redacted_ranges = self.editor.read(cx).redacted_ranges(
5973 start_anchor..end_anchor,
5974 &snapshot.display_snapshot,
5975 cx,
5976 );
5977
5978 let local_selections: Vec<Selection<Point>> =
5979 self.editor.update(cx, |editor, cx| {
5980 let mut selections = editor
5981 .selections
5982 .disjoint_in_range(start_anchor..end_anchor, cx);
5983 selections.extend(editor.selections.pending(cx));
5984 selections
5985 });
5986
5987 let (selections, active_rows, newest_selection_head) = self.layout_selections(
5988 start_anchor,
5989 end_anchor,
5990 &local_selections,
5991 &snapshot,
5992 start_row,
5993 end_row,
5994 cx,
5995 );
5996
5997 let line_numbers = self.layout_line_numbers(
5998 start_row..end_row,
5999 buffer_rows.iter().copied(),
6000 &active_rows,
6001 newest_selection_head,
6002 &snapshot,
6003 cx,
6004 );
6005
6006 let mut crease_toggles = cx.with_element_namespace("crease_toggles", |cx| {
6007 self.layout_crease_toggles(
6008 start_row..end_row,
6009 buffer_rows.iter().copied(),
6010 &active_rows,
6011 &snapshot,
6012 cx,
6013 )
6014 });
6015 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6016 self.layout_crease_trailers(buffer_rows.iter().copied(), &snapshot, cx)
6017 });
6018
6019 let display_hunks = self.layout_gutter_git_hunks(
6020 line_height,
6021 &gutter_hitbox,
6022 start_row..end_row,
6023 start_anchor..end_anchor,
6024 &snapshot,
6025 cx,
6026 );
6027
6028 let mut max_visible_line_width = Pixels::ZERO;
6029 let mut line_layouts = Self::layout_lines(
6030 start_row..end_row,
6031 &snapshot,
6032 &self.style,
6033 editor_width,
6034 is_row_soft_wrapped,
6035 cx,
6036 );
6037 for line_with_invisibles in &line_layouts {
6038 if line_with_invisibles.width > max_visible_line_width {
6039 max_visible_line_width = line_with_invisibles.width;
6040 }
6041 }
6042
6043 let longest_line_width = layout_line(
6044 snapshot.longest_row(),
6045 &snapshot,
6046 &style,
6047 editor_width,
6048 is_row_soft_wrapped,
6049 cx,
6050 )
6051 .width;
6052
6053 let scrollbar_range_data = ScrollbarRangeData::new(
6054 scrollbar_bounds,
6055 letter_size,
6056 &snapshot,
6057 longest_line_width,
6058 &style,
6059 cx,
6060 );
6061
6062 let scroll_range_bounds = scrollbar_range_data.scroll_range;
6063 let mut scroll_width = scroll_range_bounds.size.width;
6064
6065 let blocks = cx.with_element_namespace("blocks", |cx| {
6066 self.render_blocks(
6067 start_row..end_row,
6068 &snapshot,
6069 &hitbox,
6070 &text_hitbox,
6071 editor_width,
6072 &mut scroll_width,
6073 &gutter_dimensions,
6074 em_width,
6075 gutter_dimensions.full_width(),
6076 line_height,
6077 &line_layouts,
6078 &local_selections,
6079 is_row_soft_wrapped,
6080 cx,
6081 )
6082 });
6083 let mut blocks = match blocks {
6084 Ok(blocks) => blocks,
6085 Err(resized_blocks) => {
6086 self.editor.update(cx, |editor, cx| {
6087 editor.resize_blocks(resized_blocks, autoscroll_request, cx)
6088 });
6089 return self.prepaint(None, bounds, &mut (), cx);
6090 }
6091 };
6092
6093 let start_buffer_row =
6094 MultiBufferRow(start_anchor.to_point(&snapshot.buffer_snapshot).row);
6095 let end_buffer_row =
6096 MultiBufferRow(end_anchor.to_point(&snapshot.buffer_snapshot).row);
6097
6098 let scroll_max = point(
6099 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6100 max_row.as_f32(),
6101 );
6102
6103 self.editor.update(cx, |editor, cx| {
6104 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6105
6106 let autoscrolled = if autoscroll_horizontally {
6107 editor.autoscroll_horizontally(
6108 start_row,
6109 text_hitbox.size.width,
6110 scroll_width,
6111 em_width,
6112 &line_layouts,
6113 cx,
6114 )
6115 } else {
6116 false
6117 };
6118
6119 if clamped || autoscrolled {
6120 snapshot = editor.snapshot(cx);
6121 scroll_position = snapshot.scroll_position();
6122 }
6123 });
6124
6125 let scroll_pixel_position = point(
6126 scroll_position.x * em_width,
6127 scroll_position.y * line_height,
6128 );
6129
6130 let indent_guides = self.layout_indent_guides(
6131 content_origin,
6132 text_hitbox.origin,
6133 start_buffer_row..end_buffer_row,
6134 scroll_pixel_position,
6135 line_height,
6136 &snapshot,
6137 cx,
6138 );
6139
6140 let crease_trailers = cx.with_element_namespace("crease_trailers", |cx| {
6141 self.prepaint_crease_trailers(
6142 crease_trailers,
6143 &line_layouts,
6144 line_height,
6145 content_origin,
6146 scroll_pixel_position,
6147 em_width,
6148 cx,
6149 )
6150 });
6151
6152 let mut inline_blame = None;
6153 if let Some(newest_selection_head) = newest_selection_head {
6154 let display_row = newest_selection_head.row();
6155 if (start_row..end_row).contains(&display_row) {
6156 let line_ix = display_row.minus(start_row) as usize;
6157 let line_layout = &line_layouts[line_ix];
6158 let crease_trailer_layout = crease_trailers[line_ix].as_ref();
6159 inline_blame = self.layout_inline_blame(
6160 display_row,
6161 &snapshot.display_snapshot,
6162 line_layout,
6163 crease_trailer_layout,
6164 em_width,
6165 content_origin,
6166 scroll_pixel_position,
6167 line_height,
6168 cx,
6169 );
6170 }
6171 }
6172
6173 let blamed_display_rows = self.layout_blame_entries(
6174 buffer_rows.into_iter(),
6175 em_width,
6176 scroll_position,
6177 line_height,
6178 &gutter_hitbox,
6179 gutter_dimensions.git_blame_entries_width,
6180 cx,
6181 );
6182
6183 let scroll_max = point(
6184 ((scroll_width - scrollbar_bounds.size.width) / em_width).max(0.0),
6185 max_scroll_top,
6186 );
6187
6188 self.editor.update(cx, |editor, cx| {
6189 let clamped = editor.scroll_manager.clamp_scroll_left(scroll_max.x);
6190
6191 let autoscrolled = if autoscroll_horizontally {
6192 editor.autoscroll_horizontally(
6193 start_row,
6194 text_hitbox.size.width,
6195 scroll_width,
6196 em_width,
6197 &line_layouts,
6198 cx,
6199 )
6200 } else {
6201 false
6202 };
6203
6204 if clamped || autoscrolled {
6205 snapshot = editor.snapshot(cx);
6206 scroll_position = snapshot.scroll_position();
6207 }
6208 });
6209
6210 let line_elements = self.prepaint_lines(
6211 start_row,
6212 &mut line_layouts,
6213 line_height,
6214 scroll_pixel_position,
6215 content_origin,
6216 cx,
6217 );
6218
6219 let mut block_start_rows = HashSet::default();
6220 cx.with_element_namespace("blocks", |cx| {
6221 self.layout_blocks(
6222 &mut blocks,
6223 &mut block_start_rows,
6224 &hitbox,
6225 line_height,
6226 scroll_pixel_position,
6227 cx,
6228 );
6229 });
6230
6231 let cursors = self.collect_cursors(&snapshot, cx);
6232 let visible_row_range = start_row..end_row;
6233 let non_visible_cursors = cursors
6234 .iter()
6235 .any(move |c| !visible_row_range.contains(&c.0.row()));
6236
6237 let visible_cursors = self.layout_visible_cursors(
6238 &snapshot,
6239 &selections,
6240 &block_start_rows,
6241 start_row..end_row,
6242 &line_layouts,
6243 &text_hitbox,
6244 content_origin,
6245 scroll_position,
6246 scroll_pixel_position,
6247 line_height,
6248 em_width,
6249 autoscroll_containing_element,
6250 cx,
6251 );
6252
6253 let scrollbars_layout = self.layout_scrollbars(
6254 &snapshot,
6255 scrollbar_range_data,
6256 scroll_position,
6257 non_visible_cursors,
6258 cx,
6259 );
6260
6261 let gutter_settings = EditorSettings::get_global(cx).gutter;
6262
6263 let expanded_add_hunks_by_rows = self.editor.update(cx, |editor, _| {
6264 editor
6265 .diff_map
6266 .hunks(false)
6267 .filter(|hunk| hunk.status == DiffHunkStatus::Added)
6268 .map(|expanded_hunk| {
6269 let start_row = expanded_hunk
6270 .hunk_range
6271 .start
6272 .to_display_point(&snapshot)
6273 .row();
6274 (start_row, expanded_hunk.clone())
6275 })
6276 .collect::<HashMap<_, _>>()
6277 });
6278
6279 let rows_with_hunk_bounds = display_hunks
6280 .iter()
6281 .filter_map(|(hunk, hitbox)| Some((hunk, hitbox.as_ref()?.bounds)))
6282 .fold(
6283 HashMap::default(),
6284 |mut rows_with_hunk_bounds, (hunk, bounds)| {
6285 match hunk {
6286 DisplayDiffHunk::Folded { display_row } => {
6287 rows_with_hunk_bounds.insert(*display_row, bounds);
6288 }
6289 DisplayDiffHunk::Unfolded {
6290 display_row_range, ..
6291 } => {
6292 for display_row in display_row_range.iter_rows() {
6293 rows_with_hunk_bounds.insert(display_row, bounds);
6294 }
6295 }
6296 }
6297 rows_with_hunk_bounds
6298 },
6299 );
6300 let mut code_actions_indicator = None;
6301 if let Some(newest_selection_head) = newest_selection_head {
6302 if (start_row..end_row).contains(&newest_selection_head.row()) {
6303 self.layout_context_menu(
6304 line_height,
6305 &text_hitbox,
6306 content_origin,
6307 start_row,
6308 scroll_pixel_position,
6309 &line_layouts,
6310 newest_selection_head,
6311 gutter_dimensions.width - gutter_dimensions.left_padding,
6312 cx,
6313 );
6314
6315 let show_code_actions = snapshot
6316 .show_code_actions
6317 .unwrap_or(gutter_settings.code_actions);
6318 if show_code_actions {
6319 let newest_selection_point =
6320 newest_selection_head.to_point(&snapshot.display_snapshot);
6321 let newest_selection_display_row =
6322 newest_selection_point.to_display_point(&snapshot).row();
6323 if !expanded_add_hunks_by_rows
6324 .contains_key(&newest_selection_display_row)
6325 {
6326 if !snapshot
6327 .is_line_folded(MultiBufferRow(newest_selection_point.row))
6328 {
6329 let buffer = snapshot.buffer_snapshot.buffer_line_for_row(
6330 MultiBufferRow(newest_selection_point.row),
6331 );
6332 if let Some((buffer, range)) = buffer {
6333 let buffer_id = buffer.remote_id();
6334 let row = range.start.row;
6335 let has_test_indicator = self
6336 .editor
6337 .read(cx)
6338 .tasks
6339 .contains_key(&(buffer_id, row));
6340
6341 if !has_test_indicator {
6342 code_actions_indicator = self
6343 .layout_code_actions_indicator(
6344 line_height,
6345 newest_selection_head,
6346 scroll_pixel_position,
6347 &gutter_dimensions,
6348 &gutter_hitbox,
6349 &rows_with_hunk_bounds,
6350 cx,
6351 );
6352 }
6353 }
6354 }
6355 }
6356 }
6357 }
6358 }
6359
6360 let test_indicators = if gutter_settings.runnables {
6361 self.layout_run_indicators(
6362 line_height,
6363 start_row..end_row,
6364 scroll_pixel_position,
6365 &gutter_dimensions,
6366 &gutter_hitbox,
6367 &rows_with_hunk_bounds,
6368 &snapshot,
6369 cx,
6370 )
6371 } else {
6372 Vec::new()
6373 };
6374
6375 self.layout_signature_help(
6376 &hitbox,
6377 content_origin,
6378 scroll_pixel_position,
6379 newest_selection_head,
6380 start_row,
6381 &line_layouts,
6382 line_height,
6383 em_width,
6384 cx,
6385 );
6386
6387 if !cx.has_active_drag() {
6388 self.layout_hover_popovers(
6389 &snapshot,
6390 &hitbox,
6391 &text_hitbox,
6392 start_row..end_row,
6393 content_origin,
6394 scroll_pixel_position,
6395 &line_layouts,
6396 line_height,
6397 em_width,
6398 cx,
6399 );
6400 }
6401
6402 let inline_completion_popover = self.layout_inline_completion_popover(
6403 &text_hitbox.bounds,
6404 &snapshot,
6405 start_row..end_row,
6406 scroll_position.y,
6407 scroll_position.y + height_in_lines,
6408 &line_layouts,
6409 line_height,
6410 scroll_pixel_position,
6411 editor_width,
6412 &style,
6413 cx,
6414 );
6415
6416 let mouse_context_menu = self.layout_mouse_context_menu(
6417 &snapshot,
6418 start_row..end_row,
6419 content_origin,
6420 cx,
6421 );
6422
6423 cx.with_element_namespace("crease_toggles", |cx| {
6424 self.prepaint_crease_toggles(
6425 &mut crease_toggles,
6426 line_height,
6427 &gutter_dimensions,
6428 gutter_settings,
6429 scroll_pixel_position,
6430 &gutter_hitbox,
6431 cx,
6432 )
6433 });
6434
6435 let invisible_symbol_font_size = font_size / 2.;
6436 let tab_invisible = cx
6437 .text_system()
6438 .shape_line(
6439 "→".into(),
6440 invisible_symbol_font_size,
6441 &[TextRun {
6442 len: "→".len(),
6443 font: self.style.text.font(),
6444 color: cx.theme().colors().editor_invisible,
6445 background_color: None,
6446 underline: None,
6447 strikethrough: None,
6448 }],
6449 )
6450 .unwrap();
6451 let space_invisible = cx
6452 .text_system()
6453 .shape_line(
6454 "•".into(),
6455 invisible_symbol_font_size,
6456 &[TextRun {
6457 len: "•".len(),
6458 font: self.style.text.font(),
6459 color: cx.theme().colors().editor_invisible,
6460 background_color: None,
6461 underline: None,
6462 strikethrough: None,
6463 }],
6464 )
6465 .unwrap();
6466
6467 EditorLayout {
6468 mode: snapshot.mode,
6469 position_map: Rc::new(PositionMap {
6470 size: bounds.size,
6471 scroll_pixel_position,
6472 scroll_max,
6473 line_layouts,
6474 line_height,
6475 em_width,
6476 em_advance,
6477 snapshot,
6478 }),
6479 visible_display_row_range: start_row..end_row,
6480 wrap_guides,
6481 indent_guides,
6482 hitbox,
6483 text_hitbox,
6484 gutter_hitbox,
6485 gutter_dimensions,
6486 display_hunks,
6487 content_origin,
6488 scrollbars_layout,
6489 active_rows,
6490 highlighted_rows,
6491 highlighted_ranges,
6492 highlighted_gutter_ranges,
6493 redacted_ranges,
6494 line_elements,
6495 line_numbers,
6496 blamed_display_rows,
6497 inline_blame,
6498 blocks,
6499 cursors,
6500 visible_cursors,
6501 selections,
6502 inline_completion_popover,
6503 mouse_context_menu,
6504 test_indicators,
6505 code_actions_indicator,
6506 crease_toggles,
6507 crease_trailers,
6508 tab_invisible,
6509 space_invisible,
6510 }
6511 })
6512 })
6513 })
6514 }
6515
6516 fn paint(
6517 &mut self,
6518 _: Option<&GlobalElementId>,
6519 bounds: Bounds<gpui::Pixels>,
6520 _: &mut Self::RequestLayoutState,
6521 layout: &mut Self::PrepaintState,
6522 cx: &mut WindowContext,
6523 ) {
6524 let focus_handle = self.editor.focus_handle(cx);
6525 let key_context = self.editor.update(cx, |editor, cx| editor.key_context(cx));
6526 cx.set_key_context(key_context);
6527 cx.handle_input(
6528 &focus_handle,
6529 ElementInputHandler::new(bounds, self.editor.clone()),
6530 );
6531 self.register_actions(cx);
6532 self.register_key_listeners(cx, layout);
6533
6534 let text_style = TextStyleRefinement {
6535 font_size: Some(self.style.text.font_size),
6536 line_height: Some(self.style.text.line_height),
6537 ..Default::default()
6538 };
6539 let hovered_hunk = layout
6540 .display_hunks
6541 .iter()
6542 .find_map(|(hunk, hunk_hitbox)| match hunk {
6543 DisplayDiffHunk::Folded { .. } => None,
6544 DisplayDiffHunk::Unfolded {
6545 diff_base_byte_range,
6546 multi_buffer_range,
6547 status,
6548 ..
6549 } => {
6550 if hunk_hitbox
6551 .as_ref()
6552 .map(|hitbox| hitbox.is_hovered(cx))
6553 .unwrap_or(false)
6554 {
6555 Some(HoveredHunk {
6556 status: *status,
6557 multi_buffer_range: multi_buffer_range.clone(),
6558 diff_base_byte_range: diff_base_byte_range.clone(),
6559 })
6560 } else {
6561 None
6562 }
6563 }
6564 });
6565 let rem_size = self.rem_size(cx);
6566 cx.with_rem_size(rem_size, |cx| {
6567 cx.with_text_style(Some(text_style), |cx| {
6568 cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
6569 self.paint_mouse_listeners(layout, hovered_hunk, cx);
6570 self.paint_background(layout, cx);
6571 self.paint_indent_guides(layout, cx);
6572
6573 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6574 self.paint_blamed_display_rows(layout, cx);
6575 self.paint_line_numbers(layout, cx);
6576 }
6577
6578 self.paint_text(layout, cx);
6579
6580 if layout.gutter_hitbox.size.width > Pixels::ZERO {
6581 self.paint_gutter_highlights(layout, cx);
6582 self.paint_gutter_indicators(layout, cx);
6583 }
6584
6585 if !layout.blocks.is_empty() {
6586 cx.with_element_namespace("blocks", |cx| {
6587 self.paint_blocks(layout, cx);
6588 });
6589 }
6590
6591 self.paint_scrollbars(layout, cx);
6592 self.paint_inline_completion_popover(layout, cx);
6593 self.paint_mouse_context_menu(layout, cx);
6594 });
6595 })
6596 })
6597 }
6598}
6599
6600pub(super) fn gutter_bounds(
6601 editor_bounds: Bounds<Pixels>,
6602 gutter_dimensions: GutterDimensions,
6603) -> Bounds<Pixels> {
6604 Bounds {
6605 origin: editor_bounds.origin,
6606 size: size(gutter_dimensions.width, editor_bounds.size.height),
6607 }
6608}
6609
6610struct ScrollbarRangeData {
6611 scrollbar_bounds: Bounds<Pixels>,
6612 scroll_range: Bounds<Pixels>,
6613 letter_size: Size<Pixels>,
6614}
6615
6616impl ScrollbarRangeData {
6617 pub fn new(
6618 scrollbar_bounds: Bounds<Pixels>,
6619 letter_size: Size<Pixels>,
6620 snapshot: &EditorSnapshot,
6621 longest_line_width: Pixels,
6622 style: &EditorStyle,
6623 cx: &WindowContext,
6624 ) -> ScrollbarRangeData {
6625 // TODO: Simplify this function down, it requires a lot of parameters
6626 let max_row = snapshot.max_point().row();
6627 let text_bounds_size = size(longest_line_width, max_row.0 as f32 * letter_size.height);
6628
6629 let scrollbar_width = style.scrollbar_width;
6630
6631 let settings = EditorSettings::get_global(cx);
6632 let scroll_beyond_last_line: Pixels = match settings.scroll_beyond_last_line {
6633 ScrollBeyondLastLine::OnePage => px(scrollbar_bounds.size.height / letter_size.height),
6634 ScrollBeyondLastLine::Off => px(1.),
6635 ScrollBeyondLastLine::VerticalScrollMargin => px(1.0 + settings.vertical_scroll_margin),
6636 };
6637
6638 let overscroll = size(
6639 scrollbar_width + (letter_size.width / 2.0),
6640 letter_size.height * scroll_beyond_last_line,
6641 );
6642
6643 let scroll_range = Bounds {
6644 origin: scrollbar_bounds.origin,
6645 size: text_bounds_size + overscroll,
6646 };
6647
6648 ScrollbarRangeData {
6649 scrollbar_bounds,
6650 scroll_range,
6651 letter_size,
6652 }
6653 }
6654}
6655
6656impl IntoElement for EditorElement {
6657 type Element = Self;
6658
6659 fn into_element(self) -> Self::Element {
6660 self
6661 }
6662}
6663
6664pub struct EditorLayout {
6665 position_map: Rc<PositionMap>,
6666 hitbox: Hitbox,
6667 text_hitbox: Hitbox,
6668 gutter_hitbox: Hitbox,
6669 gutter_dimensions: GutterDimensions,
6670 content_origin: gpui::Point<Pixels>,
6671 scrollbars_layout: AxisPair<Option<ScrollbarLayout>>,
6672 mode: EditorMode,
6673 wrap_guides: SmallVec<[(Pixels, bool); 2]>,
6674 indent_guides: Option<Vec<IndentGuideLayout>>,
6675 visible_display_row_range: Range<DisplayRow>,
6676 active_rows: BTreeMap<DisplayRow, bool>,
6677 highlighted_rows: BTreeMap<DisplayRow, Hsla>,
6678 line_elements: SmallVec<[AnyElement; 1]>,
6679 line_numbers: Vec<Option<ShapedLine>>,
6680 display_hunks: Vec<(DisplayDiffHunk, Option<Hitbox>)>,
6681 blamed_display_rows: Option<Vec<AnyElement>>,
6682 inline_blame: Option<AnyElement>,
6683 blocks: Vec<BlockLayout>,
6684 highlighted_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6685 highlighted_gutter_ranges: Vec<(Range<DisplayPoint>, Hsla)>,
6686 redacted_ranges: Vec<Range<DisplayPoint>>,
6687 cursors: Vec<(DisplayPoint, Hsla)>,
6688 visible_cursors: Vec<CursorLayout>,
6689 selections: Vec<(PlayerColor, Vec<SelectionLayout>)>,
6690 code_actions_indicator: Option<AnyElement>,
6691 test_indicators: Vec<AnyElement>,
6692 crease_toggles: Vec<Option<AnyElement>>,
6693 crease_trailers: Vec<Option<CreaseTrailerLayout>>,
6694 inline_completion_popover: Option<AnyElement>,
6695 mouse_context_menu: Option<AnyElement>,
6696 tab_invisible: ShapedLine,
6697 space_invisible: ShapedLine,
6698}
6699
6700impl EditorLayout {
6701 fn line_end_overshoot(&self) -> Pixels {
6702 0.15 * self.position_map.line_height
6703 }
6704}
6705
6706struct ColoredRange<T> {
6707 start: T,
6708 end: T,
6709 color: Hsla,
6710}
6711
6712#[derive(Clone)]
6713struct ScrollbarLayout {
6714 hitbox: Hitbox,
6715 visible_range: Range<f32>,
6716 visible: bool,
6717 text_unit_size: Pixels,
6718 thumb_size: Pixels,
6719 axis: Axis,
6720}
6721
6722impl ScrollbarLayout {
6723 const BORDER_WIDTH: Pixels = px(1.0);
6724 const LINE_MARKER_HEIGHT: Pixels = px(2.0);
6725 const MIN_MARKER_HEIGHT: Pixels = px(5.0);
6726 // const MIN_THUMB_HEIGHT: Pixels = px(20.0);
6727
6728 fn thumb_bounds(&self) -> Bounds<Pixels> {
6729 match self.axis {
6730 Axis::Vertical => {
6731 let thumb_top = self.y_for_row(self.visible_range.start);
6732 let thumb_bottom = thumb_top + self.thumb_size;
6733 Bounds::from_corners(
6734 point(self.hitbox.left(), thumb_top),
6735 point(self.hitbox.right(), thumb_bottom),
6736 )
6737 }
6738 Axis::Horizontal => {
6739 let thumb_left =
6740 self.hitbox.left() + self.visible_range.start * self.text_unit_size;
6741 let thumb_right = thumb_left + self.thumb_size;
6742 Bounds::from_corners(
6743 point(thumb_left, self.hitbox.top()),
6744 point(thumb_right, self.hitbox.bottom()),
6745 )
6746 }
6747 }
6748 }
6749
6750 fn y_for_row(&self, row: f32) -> Pixels {
6751 self.hitbox.top() + row * self.text_unit_size
6752 }
6753
6754 fn marker_quads_for_ranges(
6755 &self,
6756 row_ranges: impl IntoIterator<Item = ColoredRange<DisplayRow>>,
6757 column: Option<usize>,
6758 ) -> Vec<PaintQuad> {
6759 struct MinMax {
6760 min: Pixels,
6761 max: Pixels,
6762 }
6763 let (x_range, height_limit) = if let Some(column) = column {
6764 let column_width = px(((self.hitbox.size.width - Self::BORDER_WIDTH).0 / 3.0).floor());
6765 let start = Self::BORDER_WIDTH + (column as f32 * column_width);
6766 let end = start + column_width;
6767 (
6768 Range { start, end },
6769 MinMax {
6770 min: Self::MIN_MARKER_HEIGHT,
6771 max: px(f32::MAX),
6772 },
6773 )
6774 } else {
6775 (
6776 Range {
6777 start: Self::BORDER_WIDTH,
6778 end: self.hitbox.size.width,
6779 },
6780 MinMax {
6781 min: Self::LINE_MARKER_HEIGHT,
6782 max: Self::LINE_MARKER_HEIGHT,
6783 },
6784 )
6785 };
6786
6787 let row_to_y = |row: DisplayRow| row.as_f32() * self.text_unit_size;
6788 let mut pixel_ranges = row_ranges
6789 .into_iter()
6790 .map(|range| {
6791 let start_y = row_to_y(range.start);
6792 let end_y = row_to_y(range.end)
6793 + self
6794 .text_unit_size
6795 .max(height_limit.min)
6796 .min(height_limit.max);
6797 ColoredRange {
6798 start: start_y,
6799 end: end_y,
6800 color: range.color,
6801 }
6802 })
6803 .peekable();
6804
6805 let mut quads = Vec::new();
6806 while let Some(mut pixel_range) = pixel_ranges.next() {
6807 while let Some(next_pixel_range) = pixel_ranges.peek() {
6808 if pixel_range.end >= next_pixel_range.start - px(1.0)
6809 && pixel_range.color == next_pixel_range.color
6810 {
6811 pixel_range.end = next_pixel_range.end.max(pixel_range.end);
6812 pixel_ranges.next();
6813 } else {
6814 break;
6815 }
6816 }
6817
6818 let bounds = Bounds::from_corners(
6819 point(x_range.start, pixel_range.start),
6820 point(x_range.end, pixel_range.end),
6821 );
6822 quads.push(quad(
6823 bounds,
6824 Corners::default(),
6825 pixel_range.color,
6826 Edges::default(),
6827 Hsla::transparent_black(),
6828 ));
6829 }
6830
6831 quads
6832 }
6833}
6834
6835struct CreaseTrailerLayout {
6836 element: AnyElement,
6837 bounds: Bounds<Pixels>,
6838}
6839
6840struct PositionMap {
6841 size: Size<Pixels>,
6842 line_height: Pixels,
6843 scroll_pixel_position: gpui::Point<Pixels>,
6844 scroll_max: gpui::Point<f32>,
6845 em_width: Pixels,
6846 em_advance: Pixels,
6847 line_layouts: Vec<LineWithInvisibles>,
6848 snapshot: EditorSnapshot,
6849}
6850
6851#[derive(Debug, Copy, Clone)]
6852pub struct PointForPosition {
6853 pub previous_valid: DisplayPoint,
6854 pub next_valid: DisplayPoint,
6855 pub exact_unclipped: DisplayPoint,
6856 pub column_overshoot_after_line_end: u32,
6857}
6858
6859impl PointForPosition {
6860 pub fn as_valid(&self) -> Option<DisplayPoint> {
6861 if self.previous_valid == self.exact_unclipped && self.next_valid == self.exact_unclipped {
6862 Some(self.previous_valid)
6863 } else {
6864 None
6865 }
6866 }
6867}
6868
6869impl PositionMap {
6870 fn point_for_position(
6871 &self,
6872 text_bounds: Bounds<Pixels>,
6873 position: gpui::Point<Pixels>,
6874 ) -> PointForPosition {
6875 let scroll_position = self.snapshot.scroll_position();
6876 let position = position - text_bounds.origin;
6877 let y = position.y.max(px(0.)).min(self.size.height);
6878 let x = position.x + (scroll_position.x * self.em_width);
6879 let row = ((y / self.line_height) + scroll_position.y) as u32;
6880
6881 let (column, x_overshoot_after_line_end) = if let Some(line) = self
6882 .line_layouts
6883 .get(row as usize - scroll_position.y as usize)
6884 {
6885 if let Some(ix) = line.index_for_x(x) {
6886 (ix as u32, px(0.))
6887 } else {
6888 (line.len as u32, px(0.).max(x - line.width))
6889 }
6890 } else {
6891 (0, x)
6892 };
6893
6894 let mut exact_unclipped = DisplayPoint::new(DisplayRow(row), column);
6895 let previous_valid = self.snapshot.clip_point(exact_unclipped, Bias::Left);
6896 let next_valid = self.snapshot.clip_point(exact_unclipped, Bias::Right);
6897
6898 let column_overshoot_after_line_end = (x_overshoot_after_line_end / self.em_advance) as u32;
6899 *exact_unclipped.column_mut() += column_overshoot_after_line_end;
6900 PointForPosition {
6901 previous_valid,
6902 next_valid,
6903 exact_unclipped,
6904 column_overshoot_after_line_end,
6905 }
6906 }
6907}
6908
6909struct BlockLayout {
6910 id: BlockId,
6911 row: Option<DisplayRow>,
6912 element: AnyElement,
6913 available_space: Size<AvailableSpace>,
6914 style: BlockStyle,
6915}
6916
6917fn layout_line(
6918 row: DisplayRow,
6919 snapshot: &EditorSnapshot,
6920 style: &EditorStyle,
6921 text_width: Pixels,
6922 is_row_soft_wrapped: impl Copy + Fn(usize) -> bool,
6923 cx: &mut WindowContext,
6924) -> LineWithInvisibles {
6925 let chunks = snapshot.highlighted_chunks(row..row + DisplayRow(1), true, style);
6926 LineWithInvisibles::from_chunks(
6927 chunks,
6928 &style,
6929 MAX_LINE_LEN,
6930 1,
6931 snapshot.mode,
6932 text_width,
6933 is_row_soft_wrapped,
6934 cx,
6935 )
6936 .pop()
6937 .unwrap()
6938}
6939
6940#[derive(Debug)]
6941pub struct IndentGuideLayout {
6942 origin: gpui::Point<Pixels>,
6943 length: Pixels,
6944 single_indent_width: Pixels,
6945 depth: u32,
6946 active: bool,
6947 settings: IndentGuideSettings,
6948}
6949
6950pub struct CursorLayout {
6951 origin: gpui::Point<Pixels>,
6952 block_width: Pixels,
6953 line_height: Pixels,
6954 color: Hsla,
6955 shape: CursorShape,
6956 block_text: Option<ShapedLine>,
6957 cursor_name: Option<AnyElement>,
6958}
6959
6960#[derive(Debug)]
6961pub struct CursorName {
6962 string: SharedString,
6963 color: Hsla,
6964 is_top_row: bool,
6965}
6966
6967impl CursorLayout {
6968 pub fn new(
6969 origin: gpui::Point<Pixels>,
6970 block_width: Pixels,
6971 line_height: Pixels,
6972 color: Hsla,
6973 shape: CursorShape,
6974 block_text: Option<ShapedLine>,
6975 ) -> CursorLayout {
6976 CursorLayout {
6977 origin,
6978 block_width,
6979 line_height,
6980 color,
6981 shape,
6982 block_text,
6983 cursor_name: None,
6984 }
6985 }
6986
6987 pub fn bounding_rect(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6988 Bounds {
6989 origin: self.origin + origin,
6990 size: size(self.block_width, self.line_height),
6991 }
6992 }
6993
6994 fn bounds(&self, origin: gpui::Point<Pixels>) -> Bounds<Pixels> {
6995 match self.shape {
6996 CursorShape::Bar => Bounds {
6997 origin: self.origin + origin,
6998 size: size(px(2.0), self.line_height),
6999 },
7000 CursorShape::Block | CursorShape::Hollow => Bounds {
7001 origin: self.origin + origin,
7002 size: size(self.block_width, self.line_height),
7003 },
7004 CursorShape::Underline => Bounds {
7005 origin: self.origin
7006 + origin
7007 + gpui::Point::new(Pixels::ZERO, self.line_height - px(2.0)),
7008 size: size(self.block_width, px(2.0)),
7009 },
7010 }
7011 }
7012
7013 pub fn layout(
7014 &mut self,
7015 origin: gpui::Point<Pixels>,
7016 cursor_name: Option<CursorName>,
7017 cx: &mut WindowContext,
7018 ) {
7019 if let Some(cursor_name) = cursor_name {
7020 let bounds = self.bounds(origin);
7021 let text_size = self.line_height / 1.5;
7022
7023 let name_origin = if cursor_name.is_top_row {
7024 point(bounds.right() - px(1.), bounds.top())
7025 } else {
7026 point(bounds.left(), bounds.top() - text_size / 2. - px(1.))
7027 };
7028 let mut name_element = div()
7029 .bg(self.color)
7030 .text_size(text_size)
7031 .px_0p5()
7032 .line_height(text_size + px(2.))
7033 .text_color(cursor_name.color)
7034 .child(cursor_name.string.clone())
7035 .into_any_element();
7036
7037 name_element.prepaint_as_root(name_origin, AvailableSpace::min_size(), cx);
7038
7039 self.cursor_name = Some(name_element);
7040 }
7041 }
7042
7043 pub fn paint(&mut self, origin: gpui::Point<Pixels>, cx: &mut WindowContext) {
7044 let bounds = self.bounds(origin);
7045
7046 //Draw background or border quad
7047 let cursor = if matches!(self.shape, CursorShape::Hollow) {
7048 outline(bounds, self.color)
7049 } else {
7050 fill(bounds, self.color)
7051 };
7052
7053 if let Some(name) = &mut self.cursor_name {
7054 name.paint(cx);
7055 }
7056
7057 cx.paint_quad(cursor);
7058
7059 if let Some(block_text) = &self.block_text {
7060 block_text
7061 .paint(self.origin + origin, self.line_height, cx)
7062 .log_err();
7063 }
7064 }
7065
7066 pub fn shape(&self) -> CursorShape {
7067 self.shape
7068 }
7069}
7070
7071#[derive(Debug)]
7072pub struct HighlightedRange {
7073 pub start_y: Pixels,
7074 pub line_height: Pixels,
7075 pub lines: Vec<HighlightedRangeLine>,
7076 pub color: Hsla,
7077 pub corner_radius: Pixels,
7078}
7079
7080#[derive(Debug)]
7081pub struct HighlightedRangeLine {
7082 pub start_x: Pixels,
7083 pub end_x: Pixels,
7084}
7085
7086impl HighlightedRange {
7087 pub fn paint(&self, bounds: Bounds<Pixels>, cx: &mut WindowContext) {
7088 if self.lines.len() >= 2 && self.lines[0].start_x > self.lines[1].end_x {
7089 self.paint_lines(self.start_y, &self.lines[0..1], bounds, cx);
7090 self.paint_lines(
7091 self.start_y + self.line_height,
7092 &self.lines[1..],
7093 bounds,
7094 cx,
7095 );
7096 } else {
7097 self.paint_lines(self.start_y, &self.lines, bounds, cx);
7098 }
7099 }
7100
7101 fn paint_lines(
7102 &self,
7103 start_y: Pixels,
7104 lines: &[HighlightedRangeLine],
7105 _bounds: Bounds<Pixels>,
7106 cx: &mut WindowContext,
7107 ) {
7108 if lines.is_empty() {
7109 return;
7110 }
7111
7112 let first_line = lines.first().unwrap();
7113 let last_line = lines.last().unwrap();
7114
7115 let first_top_left = point(first_line.start_x, start_y);
7116 let first_top_right = point(first_line.end_x, start_y);
7117
7118 let curve_height = point(Pixels::ZERO, self.corner_radius);
7119 let curve_width = |start_x: Pixels, end_x: Pixels| {
7120 let max = (end_x - start_x) / 2.;
7121 let width = if max < self.corner_radius {
7122 max
7123 } else {
7124 self.corner_radius
7125 };
7126
7127 point(width, Pixels::ZERO)
7128 };
7129
7130 let top_curve_width = curve_width(first_line.start_x, first_line.end_x);
7131 let mut path = gpui::Path::new(first_top_right - top_curve_width);
7132 path.curve_to(first_top_right + curve_height, first_top_right);
7133
7134 let mut iter = lines.iter().enumerate().peekable();
7135 while let Some((ix, line)) = iter.next() {
7136 let bottom_right = point(line.end_x, start_y + (ix + 1) as f32 * self.line_height);
7137
7138 if let Some((_, next_line)) = iter.peek() {
7139 let next_top_right = point(next_line.end_x, bottom_right.y);
7140
7141 match next_top_right.x.partial_cmp(&bottom_right.x).unwrap() {
7142 Ordering::Equal => {
7143 path.line_to(bottom_right);
7144 }
7145 Ordering::Less => {
7146 let curve_width = curve_width(next_top_right.x, bottom_right.x);
7147 path.line_to(bottom_right - curve_height);
7148 if self.corner_radius > Pixels::ZERO {
7149 path.curve_to(bottom_right - curve_width, bottom_right);
7150 }
7151 path.line_to(next_top_right + curve_width);
7152 if self.corner_radius > Pixels::ZERO {
7153 path.curve_to(next_top_right + curve_height, next_top_right);
7154 }
7155 }
7156 Ordering::Greater => {
7157 let curve_width = curve_width(bottom_right.x, next_top_right.x);
7158 path.line_to(bottom_right - curve_height);
7159 if self.corner_radius > Pixels::ZERO {
7160 path.curve_to(bottom_right + curve_width, bottom_right);
7161 }
7162 path.line_to(next_top_right - curve_width);
7163 if self.corner_radius > Pixels::ZERO {
7164 path.curve_to(next_top_right + curve_height, next_top_right);
7165 }
7166 }
7167 }
7168 } else {
7169 let curve_width = curve_width(line.start_x, line.end_x);
7170 path.line_to(bottom_right - curve_height);
7171 if self.corner_radius > Pixels::ZERO {
7172 path.curve_to(bottom_right - curve_width, bottom_right);
7173 }
7174
7175 let bottom_left = point(line.start_x, bottom_right.y);
7176 path.line_to(bottom_left + curve_width);
7177 if self.corner_radius > Pixels::ZERO {
7178 path.curve_to(bottom_left - curve_height, bottom_left);
7179 }
7180 }
7181 }
7182
7183 if first_line.start_x > last_line.start_x {
7184 let curve_width = curve_width(last_line.start_x, first_line.start_x);
7185 let second_top_left = point(last_line.start_x, start_y + self.line_height);
7186 path.line_to(second_top_left + curve_height);
7187 if self.corner_radius > Pixels::ZERO {
7188 path.curve_to(second_top_left + curve_width, second_top_left);
7189 }
7190 let first_bottom_left = point(first_line.start_x, second_top_left.y);
7191 path.line_to(first_bottom_left - curve_width);
7192 if self.corner_radius > Pixels::ZERO {
7193 path.curve_to(first_bottom_left - curve_height, first_bottom_left);
7194 }
7195 }
7196
7197 path.line_to(first_top_left + curve_height);
7198 if self.corner_radius > Pixels::ZERO {
7199 path.curve_to(first_top_left + top_curve_width, first_top_left);
7200 }
7201 path.line_to(first_top_right - top_curve_width);
7202
7203 cx.paint_path(path, self.color);
7204 }
7205}
7206
7207pub fn scale_vertical_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7208 (delta.pow(1.5) / 100.0).into()
7209}
7210
7211fn scale_horizontal_mouse_autoscroll_delta(delta: Pixels) -> f32 {
7212 (delta.pow(1.2) / 300.0).into()
7213}
7214
7215pub fn register_action<T: Action>(
7216 view: &View<Editor>,
7217 cx: &mut WindowContext,
7218 listener: impl Fn(&mut Editor, &T, &mut ViewContext<Editor>) + 'static,
7219) {
7220 let view = view.clone();
7221 cx.on_action(TypeId::of::<T>(), move |action, phase, cx| {
7222 let action = action.downcast_ref().unwrap();
7223 if phase == DispatchPhase::Bubble {
7224 view.update(cx, |editor, cx| {
7225 listener(editor, action, cx);
7226 })
7227 }
7228 })
7229}
7230
7231fn compute_auto_height_layout(
7232 editor: &mut Editor,
7233 max_lines: usize,
7234 max_line_number_width: Pixels,
7235 known_dimensions: Size<Option<Pixels>>,
7236 available_width: AvailableSpace,
7237 cx: &mut ViewContext<Editor>,
7238) -> Option<Size<Pixels>> {
7239 let width = known_dimensions.width.or({
7240 if let AvailableSpace::Definite(available_width) = available_width {
7241 Some(available_width)
7242 } else {
7243 None
7244 }
7245 })?;
7246 if let Some(height) = known_dimensions.height {
7247 return Some(size(width, height));
7248 }
7249
7250 let style = editor.style.as_ref().unwrap();
7251 let font_id = cx.text_system().resolve_font(&style.text.font());
7252 let font_size = style.text.font_size.to_pixels(cx.rem_size());
7253 let line_height = style.text.line_height_in_pixels(cx.rem_size());
7254 let em_width = cx
7255 .text_system()
7256 .typographic_bounds(font_id, font_size, 'm')
7257 .unwrap()
7258 .size
7259 .width;
7260 let em_advance = cx
7261 .text_system()
7262 .advance(font_id, font_size, 'm')
7263 .unwrap()
7264 .width;
7265
7266 let mut snapshot = editor.snapshot(cx);
7267 let gutter_dimensions = snapshot.gutter_dimensions(
7268 font_id,
7269 font_size,
7270 em_width,
7271 em_advance,
7272 max_line_number_width,
7273 cx,
7274 );
7275
7276 editor.gutter_dimensions = gutter_dimensions;
7277 let text_width = width - gutter_dimensions.width;
7278 let overscroll = size(em_width, px(0.));
7279
7280 let editor_width = text_width - gutter_dimensions.margin - overscroll.width - em_width;
7281 if editor.set_wrap_width(Some(editor_width), cx) {
7282 snapshot = editor.snapshot(cx);
7283 }
7284
7285 let scroll_height = Pixels::from(snapshot.max_point().row().next_row().0) * line_height;
7286 let height = scroll_height
7287 .max(line_height)
7288 .min(line_height * max_lines as f32);
7289
7290 Some(size(width, height))
7291}
7292
7293#[cfg(test)]
7294mod tests {
7295 use super::*;
7296 use crate::{
7297 display_map::{BlockPlacement, BlockProperties},
7298 editor_tests::{init_test, update_test_language_settings},
7299 Editor, MultiBuffer,
7300 };
7301 use gpui::{TestAppContext, VisualTestContext};
7302 use language::language_settings;
7303 use log::info;
7304 use std::num::NonZeroU32;
7305 use util::test::sample_text;
7306
7307 #[gpui::test]
7308 fn test_shape_line_numbers(cx: &mut TestAppContext) {
7309 init_test(cx, |_| {});
7310 let window = cx.add_window(|cx| {
7311 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
7312 Editor::new(EditorMode::Full, buffer, None, true, cx)
7313 });
7314
7315 let editor = window.root(cx).unwrap();
7316 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7317 let element = EditorElement::new(&editor, style);
7318 let snapshot = window.update(cx, |editor, cx| editor.snapshot(cx)).unwrap();
7319
7320 let layouts = cx
7321 .update_window(*window, |_, cx| {
7322 element.layout_line_numbers(
7323 DisplayRow(0)..DisplayRow(6),
7324 (0..6).map(MultiBufferRow).map(Some),
7325 &Default::default(),
7326 Some(DisplayPoint::new(DisplayRow(0), 0)),
7327 &snapshot,
7328 cx,
7329 )
7330 })
7331 .unwrap();
7332 assert_eq!(layouts.len(), 6);
7333
7334 let relative_rows = window
7335 .update(cx, |editor, cx| {
7336 let snapshot = editor.snapshot(cx);
7337 element.calculate_relative_line_numbers(
7338 &snapshot,
7339 &(DisplayRow(0)..DisplayRow(6)),
7340 Some(DisplayRow(3)),
7341 )
7342 })
7343 .unwrap();
7344 assert_eq!(relative_rows[&DisplayRow(0)], 3);
7345 assert_eq!(relative_rows[&DisplayRow(1)], 2);
7346 assert_eq!(relative_rows[&DisplayRow(2)], 1);
7347 // current line has no relative number
7348 assert_eq!(relative_rows[&DisplayRow(4)], 1);
7349 assert_eq!(relative_rows[&DisplayRow(5)], 2);
7350
7351 // works if cursor is before screen
7352 let relative_rows = window
7353 .update(cx, |editor, cx| {
7354 let snapshot = editor.snapshot(cx);
7355 element.calculate_relative_line_numbers(
7356 &snapshot,
7357 &(DisplayRow(3)..DisplayRow(6)),
7358 Some(DisplayRow(1)),
7359 )
7360 })
7361 .unwrap();
7362 assert_eq!(relative_rows.len(), 3);
7363 assert_eq!(relative_rows[&DisplayRow(3)], 2);
7364 assert_eq!(relative_rows[&DisplayRow(4)], 3);
7365 assert_eq!(relative_rows[&DisplayRow(5)], 4);
7366
7367 // works if cursor is after screen
7368 let relative_rows = window
7369 .update(cx, |editor, cx| {
7370 let snapshot = editor.snapshot(cx);
7371 element.calculate_relative_line_numbers(
7372 &snapshot,
7373 &(DisplayRow(0)..DisplayRow(3)),
7374 Some(DisplayRow(6)),
7375 )
7376 })
7377 .unwrap();
7378 assert_eq!(relative_rows.len(), 3);
7379 assert_eq!(relative_rows[&DisplayRow(0)], 5);
7380 assert_eq!(relative_rows[&DisplayRow(1)], 4);
7381 assert_eq!(relative_rows[&DisplayRow(2)], 3);
7382 }
7383
7384 #[gpui::test]
7385 async fn test_vim_visual_selections(cx: &mut TestAppContext) {
7386 init_test(cx, |_| {});
7387
7388 let window = cx.add_window(|cx| {
7389 let buffer = MultiBuffer::build_simple(&(sample_text(6, 6, 'a') + "\n"), cx);
7390 Editor::new(EditorMode::Full, buffer, None, true, cx)
7391 });
7392 let cx = &mut VisualTestContext::from_window(*window, cx);
7393 let editor = window.root(cx).unwrap();
7394 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7395
7396 window
7397 .update(cx, |editor, cx| {
7398 editor.cursor_shape = CursorShape::Block;
7399 editor.change_selections(None, cx, |s| {
7400 s.select_ranges([
7401 Point::new(0, 0)..Point::new(1, 0),
7402 Point::new(3, 2)..Point::new(3, 3),
7403 Point::new(5, 6)..Point::new(6, 0),
7404 ]);
7405 });
7406 })
7407 .unwrap();
7408
7409 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7410 EditorElement::new(&editor, style)
7411 });
7412
7413 assert_eq!(state.selections.len(), 1);
7414 let local_selections = &state.selections[0].1;
7415 assert_eq!(local_selections.len(), 3);
7416 // moves cursor back one line
7417 assert_eq!(
7418 local_selections[0].head,
7419 DisplayPoint::new(DisplayRow(0), 6)
7420 );
7421 assert_eq!(
7422 local_selections[0].range,
7423 DisplayPoint::new(DisplayRow(0), 0)..DisplayPoint::new(DisplayRow(1), 0)
7424 );
7425
7426 // moves cursor back one column
7427 assert_eq!(
7428 local_selections[1].range,
7429 DisplayPoint::new(DisplayRow(3), 2)..DisplayPoint::new(DisplayRow(3), 3)
7430 );
7431 assert_eq!(
7432 local_selections[1].head,
7433 DisplayPoint::new(DisplayRow(3), 2)
7434 );
7435
7436 // leaves cursor on the max point
7437 assert_eq!(
7438 local_selections[2].range,
7439 DisplayPoint::new(DisplayRow(5), 6)..DisplayPoint::new(DisplayRow(6), 0)
7440 );
7441 assert_eq!(
7442 local_selections[2].head,
7443 DisplayPoint::new(DisplayRow(6), 0)
7444 );
7445
7446 // active lines does not include 1 (even though the range of the selection does)
7447 assert_eq!(
7448 state.active_rows.keys().cloned().collect::<Vec<_>>(),
7449 vec![DisplayRow(0), DisplayRow(3), DisplayRow(5), DisplayRow(6)]
7450 );
7451
7452 // multi-buffer support
7453 // in DisplayPoint coordinates, this is what we're dealing with:
7454 // 0: [[file
7455 // 1: header
7456 // 2: section]]
7457 // 3: aaaaaa
7458 // 4: bbbbbb
7459 // 5: cccccc
7460 // 6:
7461 // 7: [[footer]]
7462 // 8: [[header]]
7463 // 9: ffffff
7464 // 10: gggggg
7465 // 11: hhhhhh
7466 // 12:
7467 // 13: [[footer]]
7468 // 14: [[file
7469 // 15: header
7470 // 16: section]]
7471 // 17: bbbbbb
7472 // 18: cccccc
7473 // 19: dddddd
7474 // 20: [[footer]]
7475 let window = cx.add_window(|cx| {
7476 let buffer = MultiBuffer::build_multi(
7477 [
7478 (
7479 &(sample_text(8, 6, 'a') + "\n"),
7480 vec![
7481 Point::new(0, 0)..Point::new(3, 0),
7482 Point::new(4, 0)..Point::new(7, 0),
7483 ],
7484 ),
7485 (
7486 &(sample_text(8, 6, 'a') + "\n"),
7487 vec![Point::new(1, 0)..Point::new(3, 0)],
7488 ),
7489 ],
7490 cx,
7491 );
7492 Editor::new(EditorMode::Full, buffer, None, true, cx)
7493 });
7494 let editor = window.root(cx).unwrap();
7495 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7496 let _state = window.update(cx, |editor, cx| {
7497 editor.cursor_shape = CursorShape::Block;
7498 editor.change_selections(None, cx, |s| {
7499 s.select_display_ranges([
7500 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0),
7501 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0),
7502 ]);
7503 });
7504 });
7505
7506 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7507 EditorElement::new(&editor, style)
7508 });
7509 assert_eq!(state.selections.len(), 1);
7510 let local_selections = &state.selections[0].1;
7511 assert_eq!(local_selections.len(), 2);
7512
7513 // moves cursor on excerpt boundary back a line
7514 // and doesn't allow selection to bleed through
7515 assert_eq!(
7516 local_selections[0].range,
7517 DisplayPoint::new(DisplayRow(4), 0)..DisplayPoint::new(DisplayRow(7), 0)
7518 );
7519 assert_eq!(
7520 local_selections[0].head,
7521 DisplayPoint::new(DisplayRow(6), 0)
7522 );
7523 // moves cursor on buffer boundary back two lines
7524 // and doesn't allow selection to bleed through
7525 assert_eq!(
7526 local_selections[1].range,
7527 DisplayPoint::new(DisplayRow(10), 0)..DisplayPoint::new(DisplayRow(13), 0)
7528 );
7529 assert_eq!(
7530 local_selections[1].head,
7531 DisplayPoint::new(DisplayRow(12), 0)
7532 );
7533 }
7534
7535 #[gpui::test]
7536 fn test_layout_with_placeholder_text_and_blocks(cx: &mut TestAppContext) {
7537 init_test(cx, |_| {});
7538
7539 let window = cx.add_window(|cx| {
7540 let buffer = MultiBuffer::build_simple("", cx);
7541 Editor::new(EditorMode::Full, buffer, None, true, cx)
7542 });
7543 let cx = &mut VisualTestContext::from_window(*window, cx);
7544 let editor = window.root(cx).unwrap();
7545 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7546 window
7547 .update(cx, |editor, cx| {
7548 editor.set_placeholder_text("hello", cx);
7549 editor.insert_blocks(
7550 [BlockProperties {
7551 style: BlockStyle::Fixed,
7552 placement: BlockPlacement::Above(Anchor::min()),
7553 height: 3,
7554 render: Arc::new(|cx| div().h(3. * cx.line_height()).into_any()),
7555 priority: 0,
7556 }],
7557 None,
7558 cx,
7559 );
7560
7561 // Blur the editor so that it displays placeholder text.
7562 cx.blur();
7563 })
7564 .unwrap();
7565
7566 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7567 EditorElement::new(&editor, style)
7568 });
7569 assert_eq!(state.position_map.line_layouts.len(), 4);
7570 assert_eq!(
7571 state
7572 .line_numbers
7573 .iter()
7574 .map(Option::is_some)
7575 .collect::<Vec<_>>(),
7576 &[false, false, false, true]
7577 );
7578 }
7579
7580 #[gpui::test]
7581 fn test_all_invisibles_drawing(cx: &mut TestAppContext) {
7582 const TAB_SIZE: u32 = 4;
7583
7584 let input_text = "\t \t|\t| a b";
7585 let expected_invisibles = vec![
7586 Invisible::Tab {
7587 line_start_offset: 0,
7588 line_end_offset: TAB_SIZE as usize,
7589 },
7590 Invisible::Whitespace {
7591 line_offset: TAB_SIZE as usize,
7592 },
7593 Invisible::Tab {
7594 line_start_offset: TAB_SIZE as usize + 1,
7595 line_end_offset: TAB_SIZE as usize * 2,
7596 },
7597 Invisible::Tab {
7598 line_start_offset: TAB_SIZE as usize * 2 + 1,
7599 line_end_offset: TAB_SIZE as usize * 3,
7600 },
7601 Invisible::Whitespace {
7602 line_offset: TAB_SIZE as usize * 3 + 1,
7603 },
7604 Invisible::Whitespace {
7605 line_offset: TAB_SIZE as usize * 3 + 3,
7606 },
7607 ];
7608 assert_eq!(
7609 expected_invisibles.len(),
7610 input_text
7611 .chars()
7612 .filter(|initial_char| initial_char.is_whitespace())
7613 .count(),
7614 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7615 );
7616
7617 for show_line_numbers in [true, false] {
7618 init_test(cx, |s| {
7619 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7620 s.defaults.tab_size = NonZeroU32::new(TAB_SIZE);
7621 });
7622
7623 let actual_invisibles = collect_invisibles_from_new_editor(
7624 cx,
7625 EditorMode::Full,
7626 input_text,
7627 px(500.0),
7628 show_line_numbers,
7629 );
7630
7631 assert_eq!(expected_invisibles, actual_invisibles);
7632 }
7633 }
7634
7635 #[gpui::test]
7636 fn test_invisibles_dont_appear_in_certain_editors(cx: &mut TestAppContext) {
7637 init_test(cx, |s| {
7638 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7639 s.defaults.tab_size = NonZeroU32::new(4);
7640 });
7641
7642 for editor_mode_without_invisibles in [
7643 EditorMode::SingleLine { auto_width: false },
7644 EditorMode::AutoHeight { max_lines: 100 },
7645 ] {
7646 for show_line_numbers in [true, false] {
7647 let invisibles = collect_invisibles_from_new_editor(
7648 cx,
7649 editor_mode_without_invisibles,
7650 "\t\t\t| | a b",
7651 px(500.0),
7652 show_line_numbers,
7653 );
7654 assert!(invisibles.is_empty(),
7655 "For editor mode {editor_mode_without_invisibles:?} no invisibles was expected but got {invisibles:?}");
7656 }
7657 }
7658 }
7659
7660 #[gpui::test]
7661 fn test_wrapped_invisibles_drawing(cx: &mut TestAppContext) {
7662 let tab_size = 4;
7663 let input_text = "a\tbcd ".repeat(9);
7664 let repeated_invisibles = [
7665 Invisible::Tab {
7666 line_start_offset: 1,
7667 line_end_offset: tab_size as usize,
7668 },
7669 Invisible::Whitespace {
7670 line_offset: tab_size as usize + 3,
7671 },
7672 Invisible::Whitespace {
7673 line_offset: tab_size as usize + 4,
7674 },
7675 Invisible::Whitespace {
7676 line_offset: tab_size as usize + 5,
7677 },
7678 Invisible::Whitespace {
7679 line_offset: tab_size as usize + 6,
7680 },
7681 Invisible::Whitespace {
7682 line_offset: tab_size as usize + 7,
7683 },
7684 ];
7685 let expected_invisibles = std::iter::once(repeated_invisibles)
7686 .cycle()
7687 .take(9)
7688 .flatten()
7689 .collect::<Vec<_>>();
7690 assert_eq!(
7691 expected_invisibles.len(),
7692 input_text
7693 .chars()
7694 .filter(|initial_char| initial_char.is_whitespace())
7695 .count(),
7696 "Hardcoded expected invisibles differ from the actual ones in '{input_text}'"
7697 );
7698 info!("Expected invisibles: {expected_invisibles:?}");
7699
7700 init_test(cx, |_| {});
7701
7702 // Put the same string with repeating whitespace pattern into editors of various size,
7703 // take deliberately small steps during resizing, to put all whitespace kinds near the wrap point.
7704 let resize_step = 10.0;
7705 let mut editor_width = 200.0;
7706 while editor_width <= 1000.0 {
7707 for show_line_numbers in [true, false] {
7708 update_test_language_settings(cx, |s| {
7709 s.defaults.tab_size = NonZeroU32::new(tab_size);
7710 s.defaults.show_whitespaces = Some(ShowWhitespaceSetting::All);
7711 s.defaults.preferred_line_length = Some(editor_width as u32);
7712 s.defaults.soft_wrap = Some(language_settings::SoftWrap::PreferredLineLength);
7713 });
7714
7715 let actual_invisibles = collect_invisibles_from_new_editor(
7716 cx,
7717 EditorMode::Full,
7718 &input_text,
7719 px(editor_width),
7720 show_line_numbers,
7721 );
7722
7723 // Whatever the editor size is, ensure it has the same invisible kinds in the same order
7724 // (no good guarantees about the offsets: wrapping could trigger padding and its tests should check the offsets).
7725 let mut i = 0;
7726 for (actual_index, actual_invisible) in actual_invisibles.iter().enumerate() {
7727 i = actual_index;
7728 match expected_invisibles.get(i) {
7729 Some(expected_invisible) => match (expected_invisible, actual_invisible) {
7730 (Invisible::Whitespace { .. }, Invisible::Whitespace { .. })
7731 | (Invisible::Tab { .. }, Invisible::Tab { .. }) => {}
7732 _ => {
7733 panic!("At index {i}, expected invisible {expected_invisible:?} does not match actual {actual_invisible:?} by kind. Actual invisibles: {actual_invisibles:?}")
7734 }
7735 },
7736 None => {
7737 panic!("Unexpected extra invisible {actual_invisible:?} at index {i}")
7738 }
7739 }
7740 }
7741 let missing_expected_invisibles = &expected_invisibles[i + 1..];
7742 assert!(
7743 missing_expected_invisibles.is_empty(),
7744 "Missing expected invisibles after index {i}: {missing_expected_invisibles:?}"
7745 );
7746
7747 editor_width += resize_step;
7748 }
7749 }
7750 }
7751
7752 fn collect_invisibles_from_new_editor(
7753 cx: &mut TestAppContext,
7754 editor_mode: EditorMode,
7755 input_text: &str,
7756 editor_width: Pixels,
7757 show_line_numbers: bool,
7758 ) -> Vec<Invisible> {
7759 info!(
7760 "Creating editor with mode {editor_mode:?}, width {}px and text '{input_text}'",
7761 editor_width.0
7762 );
7763 let window = cx.add_window(|cx| {
7764 let buffer = MultiBuffer::build_simple(input_text, cx);
7765 Editor::new(editor_mode, buffer, None, true, cx)
7766 });
7767 let cx = &mut VisualTestContext::from_window(*window, cx);
7768 let editor = window.root(cx).unwrap();
7769
7770 let style = cx.update(|cx| editor.read(cx).style().unwrap().clone());
7771 window
7772 .update(cx, |editor, cx| {
7773 editor.set_soft_wrap_mode(language_settings::SoftWrap::EditorWidth, cx);
7774 editor.set_wrap_width(Some(editor_width), cx);
7775 editor.set_show_line_numbers(show_line_numbers, cx);
7776 })
7777 .unwrap();
7778 let (_, state) = cx.draw(point(px(500.), px(500.)), size(px(500.), px(500.)), |_| {
7779 EditorElement::new(&editor, style)
7780 });
7781 state
7782 .position_map
7783 .line_layouts
7784 .iter()
7785 .flat_map(|line_with_invisibles| &line_with_invisibles.invisibles)
7786 .cloned()
7787 .collect()
7788 }
7789}